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Ephemeris: 09/29/2023 – Previewing October skies

September 29, 2023 bobmoler Comments off

This is Ephemeris for Friday, September 29th. Today the Sun will be up for 11 hours and 49 minutes, setting at 7:27, and it will rise tomorrow at 7:39. The Moon today, the full harvest supermoon, will rise at 7:45 this evening.

Let’s look at the skies for the month of October The sun will still be moving south rapidly. Daylight hours in the Interlochen/Traverse City area will drop from 11 hours and 43 minutes Sunday to 10 hours 13 minutes on the 31st. The altitude of the Sun above the southern horizon at local noon will be 42 degrees Sunday, and will descend to 31 degrees on Halloween, also in the Interlochen area. The Straits area will have the Sun a degree lower. Local noon, when the Sun is due south will be about 1:30 p.m. in Interlochen. There will be, for us in Michigan, a partial solar eclipse around midday on Saturday the 14th.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EDT, UT –4 hours). They may be different for your location.

Addendum

October Evening Star Chart

*Star Chart for October 2023. Click or tap on the image to enlarge it. Created using my LookingUp program.*

The planets and stars are plotted for the 15th at 10 p.m. EDT in the evening and 6 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.

October Morning Star Chart

*Star Chart for October 2023. Click on the image to enlarge it. Created using my LookingUp program.*

or a list of constellation names to go with the abbreviations, click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris, the North Star.
Leaky dipper drips on Leo.
Follow the arc of the handle of the Big Dipper to the star Arcturus.
The Summer Triangle is in red.
DracR – Draconid Radiant – Peaks the 8th – Zenithal Hourly Rate < 10 with rare outbursts of a thousand an hour. It’s hindered this year by the full moon.
OriR – Orionid Radiant – Peak 21st – Zenithal Hourly Rate = 20

Twilight Limits, Nautical and Astronomical

			EDT
	Morning	Twilight	Evening	Twilight	Dark	Night	Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2023-10-01	6h08m	6h43m	20h30m	21h04m	–	–	0.90
2023-10-02	6h10m	6h44m	20h28m	21h02m	–	–	0.82
2023-10-03	6h11m	6h45m	20h26m	21h00m	21h00m	21h35m	0.73
2023-10-04	6h12m	6h46m	20h24m	20h58m	20h58m	22h19m	0.63
2023-10-05	6h14m	6h48m	20h22m	20h57m	20h57m	23h11m	0.54
2023-10-06	6h15m	6h49m	20h21m	20h55m	20h55m	–	0.44
2023-10-07	6h16m	6h50m	20h19m	20h53m	20h53m	0h11m	0.34
2023-10-08	6h17m	6h51m	20h17m	20h51m	20h51m	1h15m	0.26
2023-10-09	6h19m	6h53m	20h15m	20h49m	20h49m	2h21m	0.18
2023-10-10	6h20m	6h54m	20h14m	20h47m	20h47m	3h27m	0.11
2023-10-11	6h21m	6h55m	20h12m	20h46m	20h46m	4h32m	0.06
2023-10-12	6h22m	6h56m	20h10m	20h44m	20h44m	5h36m	0.02
2023-10-13	6h24m	6h57m	20h08m	20h42m	20h42m	6h24m	0.00
2023-10-14	6h25m	6h59m	20h07m	20h40m	20h40m	6h25m	0.00
2023-10-15	6h26m	7h00m	20h05m	20h39m	20h39m	6h26m	0.02
2023-10-16	6h27m	7h01m	20h03m	20h37m	20h37m	6h27m	0.06
2023-10-17	6h29m	7h02m	20h02m	20h35m	20h35m	6h29m	0.12
2023-10-18	6h30m	7h04m	20h00m	20h34m	20h50m	6h30m	0.20
2023-10-19	6h31m	7h05m	19h58m	20h32m	21h40m	6h31m	0.29
2023-10-20	6h32m	7h06m	19h57m	20h31m	22h42m	6h32m	0.40
2023-10-21	6h34m	7h07m	19h55m	20h29m	23h56m	6h34m	0.51
2023-10-22	6h35m	7h08m	19h54m	20h28m	–	6h35m	0.62
2023-10-23	6h36m	7h10m	19h52m	20h26m	1h15m	6h36m	0.73
2023-10-24	6h37m	7h11m	19h51m	20h25m	2h37m	6h37m	0.83
2023-10-25	6h38m	7h12m	19h49m	20h23m	3h57m	6h38m	0.91
2023-10-26	6h40m	7h13m	19h48m	20h22m	5h17m	6h40m	0.96
2023-10-27	6h41m	7h15m	19h47m	20h20m	6h36m	6h41m	0.99
2023-10-28	6h42m	7h16m	19h45m	20h19m	–	–	1.00
2023-10-29	6h43m	7h17m	19h44m	20h18m	–	–	0.98
2023-10-30	6h44m	7h18m	19h42m	20h16m	–	–	0.93
2023-10-31	6h46m	7h19m	19h41m	20h15m	–	–	0.87

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

NASA - SKYCAL - Sky Events Calendar  2023
Date          Time    Event
Oct  1  Su            Venus: 44.2° W
     1  Su  11:16 pm  Moon-Jupiter: 3.5° S
     3  Tu  12:25 am  Moon-Pleiades: 1.1° N
     5  Th   4:31 pm  Moon North Dec.: 28.3° N
     6  Fr   9:48 am  Last Quarter
     7  Sa   6:23 am  Moon-Pollux: 1.6° N
     9  Mo   2:10 am  Venus-Regulus: 2.3° S
     9  Mo  11:41 pm  Moon Apogee: 405,400 km
    14  Sa   1:55 pm  New Moon
    14  Sa   2:00 pm  Annular Solar Eclipse
                      11:42 am - 2:18 pm in the Grand Traverse area
    14  Sa   9:11 pm  Moon Descending Node
    18  We   9:17 am  Moon-Antares:  0.9° S
    20  Fr   1:08 am  Mercury Superior Conj.
    20  Fr   5:19 am  Moon South Dec.: 28.3° S
    21  Sa   7:48 pm  Orionid Meteor Shower: ZHR = 20
    21  Sa  11:29 pm  First Quarter
    23  Mo   5:59 pm  Venus Greatest Western Elongation: 46.4° W
    24  Tu   3:52 am  Moon-Saturn: 2.8° N
    25  We  10:53 pm  Moon Perigee: 364,900 km
    27  Fr  11:14 pm  Moon Ascending Node
    28  Sa   4:14 pm  Partial Lunar Eclipse
                      Visible: e Americas, Europe, Africa, Asia, Australia
    28  Sa   4:24 pm  Full Hunter's Moon
    29  Su   4:10 am  Moon-Jupiter: 3.2° S
    30  Mo   9:30 am  Moon-Pleiades: 1.1° N
Nov  1  We            Venus: 46.2° W

All event times are given for UTC-4 hr: Eastern Daylight Saving Time.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site, you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

LU                  Ephemeris of Sky Events for Interlochen/TC
October, 2023    Local time zone: EDT
+-----------------------------------------------------------------------+
| DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
|      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
+=======================================================================+
|Sun  1| 07:40a  07:23p  11:43 | 08:26p  06:37a |      Rise 08:31p   91%|
|Mon  2| 07:41a  07:21p  11:40 | 08:24p  06:38a |      Rise 09:00p   84%|
|Tue  3| 07:42a  07:19p  11:36 | 08:22p  06:39a |      Rise 09:35p   75%|
|Wed  4| 07:44a  07:18p  11:33 | 08:20p  06:41a |      Rise 10:18p   65%|
|Thu  5| 07:45a  07:16p  11:30 | 08:19p  06:42a |      Rise 11:11p   56%|
|Fri  6| 07:46a  07:14p  11:27 | 08:17p  06:43a |L Qtr Rise 12:10a   46%|
|Sat  7| 07:47a  07:12p  11:24 | 08:15p  06:44a |      Rise 01:15a   36%|
+------+-----------------------+----------------+-----------------------+
|Sun  8| 07:49a  07:10p  11:21 | 08:13p  06:46a |      Rise 02:21a   28%|
|Mon  9| 07:50a  07:09p  11:18 | 08:11p  06:47a |      Rise 03:26a   20%|
|Tue 10| 07:51a  07:07p  11:15 | 08:10p  06:48a |      Rise 04:31a   13%|
|Wed 11| 07:52a  07:05p  11:12 | 08:08p  06:49a |      Rise 05:35a    7%|
|Thu 12| 07:54a  07:03p  11:09 | 08:06p  06:51a |      Rise 06:39a    3%|
|Fri 13| 07:55a  07:01p  11:06 | 08:05p  06:52a |      Rise 07:45a    1%|
|Sat 14| 07:56a  07:00p  11:03 | 08:03p  06:53a |New   Set  07:00p    0%|
+------+-----------------------+----------------+-----------------------+
|Sun 15| 07:58a  06:58p  11:00 | 08:01p  06:54a |      Set  07:20p    2%|
|Mon 16| 07:59a  06:56p  10:57 | 08:00p  06:55a |      Set  07:43p    5%|
|Tue 17| 08:00a  06:55p  10:54 | 07:58p  06:57a |      Set  08:12p   11%|
|Wed 18| 08:01a  06:53p  10:51 | 07:56p  06:58a |      Set  08:50p   18%|
|Thu 19| 08:03a  06:51p  10:48 | 07:55p  06:59a |      Set  09:39p   27%|
|Fri 20| 08:04a  06:50p  10:45 | 07:53p  07:00a |      Set  10:42p   37%|
|Sat 21| 08:05a  06:48p  10:42 | 07:52p  07:02a |F Qtr Set  11:55p   48%|
+------+-----------------------+----------------+-----------------------+
|Sun 22| 08:07a  06:46p  10:39 | 07:50p  07:03a |      Set  01:15a   60%|
|Mon 23| 08:08a  06:45p  10:36 | 07:49p  07:04a |      Set  02:36a   71%|
|Tue 24| 08:09a  06:43p  10:33 | 07:47p  07:05a |      Set  03:57a   81%|
|Wed 25| 08:11a  06:42p  10:30 | 07:46p  07:06a |      Set  05:16a   89%|
|Thu 26| 08:12a  06:40p  10:28 | 07:44p  07:08a |      Set  06:36a   95%|
|Fri 27| 08:13a  06:38p  10:25 | 07:43p  07:09a |      Set  07:55a   99%|
|Sat 28| 08:15a  06:37p  10:22 | 07:41p  07:10a |Full  Rise 06:30p  100%|
+------+-----------------------+----------------+-----------------------+
|Sun 29| 08:16a  06:36p  10:19 | 07:40p  07:11a |      Rise 06:56p   98%|
|Mon 30| 08:17a  06:34p  10:16 | 07:39p  07:13a |      Rise 07:29p   94%|
|Tue 31| 08:19a  06:33p  10:13 | 07:37p  07:14a |      Rise 08:09p   88%|
+-----------------------------------------------------------------------+
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunrise and sunset

Generated using my LookingUp for DOS program.

Categories: Ephemeris Program, Month preview, Observing Tags: October 2023

Ephemeris: 08/31/2023 – Looking ahead to September’s skies

August 31, 2023 bobmoler Comments off

This is Ephemeris for Thursday, August 31st. Today the Sun will be up for 13 hours and 17 minutes, setting at 8:21, and it will rise tomorrow at 7:04. The Moon, 1 day past full, will rise at 9:02 this evening.

Let’s look at the skies of September which starts tomorrow. The Sun will be moving at its greatest speed in its retreat to the south. Daylight hours in the Interlochen/Traverse City area will drop from 13 hours and 14 minutes tomorrow to 11 hours 46 minutes on the 30th. The altitude of the Sun above the southern horizon at local noon will be 53 degrees tomorrow, and will descend to 42 degrees on the 30th. The Straits* area will see the Sun a degree lower. The season of summer is getting short, so enjoy it while you can. Summer ends and fall begins at 12:50 a.m. on the 23rd, the autumnal equinox. Venus is our brilliant Morning Star now, And on the 29th we’ll have the Harvest Moon, the nearest full moon to the autumnal equinox. There is a comet approaching the Sun in the first half of September, It will be described in an Ephemeris Extra later today.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EDT, UT –4 hours). They may be different for your location.

*For those not familiar with our area the Straits refer to the Straits of Mackinac (pronounced Mackinaw) that separate the Upper and Lower Peninsulas of Michigan.

Addendum

September Evening Star Chart

Star Chart for September 2023. Click or tap on the image to enlarge it. Created using my LookingUp program.

September Morning Star Chart

Star Chart for September 2023 (6 am EDT, September 15, 2022). Click on the image to enlarge it. Created using my LookingUp program.

For a list of constellation names to go with the abbreviations, click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris, the North Star.
Leaky dipper drips on Leo.
Follow the arc of the handle of the Big Dipper to the star Arcturus.
The Summer Triangle is in red.

Twilight Limits, Nautical and Astronomical

			EDT
	Morning	Twilight	Evening	Twilight	Dark	Night	Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2023-09-01	5h26m	6h04m	21h29m	22h08m	–	–	0.93
2023-09-02	5h27m	6h05m	21h27m	22h05m	–	–	0.86
2023-09-03	5h29m	6h07m	21h25m	22h03m	22h03m	22h07m	0.78
2023-09-04	5h30m	6h08m	21h23m	22h01m	22h01m	22h33m	0.68
2023-09-05	5h32m	6h09m	21h21m	21h59m	21h59m	23h03m	0.57
2023-09-06	5h34m	6h11m	21h19m	21h56m	21h56m	23h41m	0.47
2023-09-07	5h35m	6h12m	21h17m	21h54m	21h54m	–	0.37
2023-09-08	5h37m	6h13m	21h15m	21h52m	21h52m	0h27m	0.28
2023-09-09	5h38m	6h15m	21h13m	21h50m	21h50m	1h21m	0.20
2023-09-10	5h40m	6h16m	21h11m	21h48m	21h48m	2h22m	0.13
2023-09-11	5h41m	6h17m	21h09m	21h46m	21h46m	3h27m	0.07
2023-09-12	5h42m	6h19m	21h07m	21h43m	21h43m	4h32m	0.03
2023-09-13	5h44m	6h20m	21h05m	21h41m	21h41m	5h38m	0.01
2023-09-14	5h45m	6h21m	21h03m	21h39m	21h39m	5h45m	0.00
2023-09-15	5h47m	6h23m	21h01m	21h37m	21h37m	5h47m	0.01
2023-09-16	5h48m	6h24m	20h59m	21h35m	21h35m	5h48m	0.04
2023-09-17	5h50m	6h25m	20h57m	21h33m	21h33m	5h50m	0.09
2023-09-18	5h51m	6h27m	20h55m	21h31m	21h31m	5h51m	0.16
2023-09-19	5h52m	6h28m	20h53m	21h28m	21h39m	5h52m	0.24
2023-09-20	5h54m	6h29m	20h51m	21h26m	22h10m	5h54m	0.33
2023-09-21	5h55m	6h30m	20h49m	21h24m	22h52m	5h55m	0.44
2023-09-22	5h57m	6h32m	20h47m	21h22m	23h46m	5h57m	0.55
2023-09-23	5h58m	6h33m	20h45m	21h20m	–	5h58m	0.66
2023-09-24	5h59m	6h34m	20h43m	21h18m	0h53m	5h59m	0.76
2023-09-25	6h01m	6h35m	20h41m	21h16m	2h11m	6h01m	0.85
2023-09-26	6h02m	6h37m	20h39m	21h14m	3h35m	6h02m	0.93
2023-09-27	6h03m	6h38m	20h37m	21h12m	4h59m	6h03m	0.98
2023-09-28	6h05m	6h39m	20h36m	21h10m	–	–	1.00
2023-09-29	6h06m	6h40m	20h34m	21h08m	–	–	0.99
2023-09-30	6h07m	6h42m	20h32m	21h06m	–	–	0.96

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

Date         Time     Event
Sep  1  Fr            Venus: 27.4° W
     3  Su   3:44 am  Moon Ascending Node
     4  Mo   3:44 pm  Moon-Jupiter: 3.4° S
     5  Tu   3:25 pm  Moon-Pleiades: 1.3° N
     6  We   7:03 am  Mercury Inferior Conj.
     6  We   6:21 pm  Last Quarter
     8  Fr   9:18 am  Moon North Dec.: 28.2° N
     9  Sa  11:32 pm  Moon-Pollux: 1.7° N
    12  Tu  11:42 am  Moon Apogee: 406,300 km
    14  Th   9:40 pm  New Moon
    17  Su  11:12 am  Moon-Spica: 2.6° S
    17  Su   3:18 pm  Moon Descending Node
    19  Tu            Venus greatest brilliancy
    19  Tu   5:54 am  Neptune Opposition
    21  Th   3:50 am  Moon-Antares:  0.9° S
    22  Fr   8:59 am  Mercury Elongation: 17.9° W
                      Favorable greatest elongation for
                      the Northern Hemisphere.
    22  Fr   3:32 pm  First Quarter
    22  Fr  11:42 pm  Moon South Dec.: 28.3° S
    23  Sa   2:50 am  Autumnal Equinox
    26  Tu   9:25 pm  Moon-Saturn: 2.6° N
    27  We   9:05 pm  Moon Perigee: 359,900 km
    29  Fr   5:57 am  Full Harvest Moon
    30  Sa  12:49 pm  Moon Ascending Node
Oct  1  Su            Venus: 44.2° W

All event times are given for UTC-4 hr: Eastern Daylight Saving Time.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site, you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

                Ephemeris of Sky Events for Interlochen/TC
September 2023    Local time zone: EDT
+-----------------------------------------------------------------------+
| DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
|      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
+=======================================================================+
|Fri  1| 07:04a  08:19p  13:14 | 09:26p  05:58a |      Rise 09:24p   94%|
|Sat  2| 07:06a  08:18p  13:11 | 09:24p  05:59a |      Rise 09:45p   88%|
+------+-----------------------+----------------+-----------------------+
|Sun  3| 07:07a  08:16p  13:08 | 09:21p  06:01a |      Rise 10:07p   79%|
|Mon  4| 07:08a  08:14p  13:05 | 09:19p  06:02a |      Rise 10:32p   70%|
|Tue  5| 07:09a  08:12p  13:02 | 09:17p  06:03a |      Rise 11:03p   60%|
|Wed  6| 07:10a  08:10p  12:59 | 09:15p  06:05a |L Qtr Rise 11:40p   49%|
|Thu  7| 07:12a  08:08p  12:56 | 09:13p  06:06a |      Rise 12:26a   39%|
|Fri  8| 07:13a  08:06p  12:53 | 09:11p  06:08a |      Rise 01:20a   30%|
|Sat  9| 07:14a  08:05p  12:50 | 09:09p  06:09a |      Rise 02:21a   22%|
+------+-----------------------+----------------+-----------------------+
|Sun 10| 07:15a  08:03p  12:47 | 09:07p  06:10a |      Rise 03:26a   14%|
|Mon 11| 07:16a  08:01p  12:44 | 09:05p  06:12a |      Rise 04:32a    8%|
|Tue 12| 07:17a  07:59p  12:41 | 09:03p  06:13a |      Rise 05:37a    4%|
|Wed 13| 07:19a  07:57p  12:38 | 09:01p  06:14a |      Rise 06:41a    1%|
|Thu 14| 07:20a  07:55p  12:35 | 08:59p  06:15a |New   Set  08:04p    0%|
|Fri 15| 07:21a  07:53p  12:32 | 08:57p  06:17a |      Set  08:20p    1%|
|Sat 16| 07:22a  07:51p  12:29 | 08:55p  06:18a |      Set  08:36p    3%|
+------+-----------------------+----------------+-----------------------+
|Sun 17| 07:23a  07:50p  12:26 | 08:53p  06:19a |      Set  08:54p    8%|
|Mon 18| 07:24a  07:48p  12:23 | 08:51p  06:21a |      Set  09:14p   14%|
|Tue 19| 07:26a  07:46p  12:20 | 08:49p  06:22a |      Set  09:39p   22%|
|Wed 20| 07:27a  07:44p  12:17 | 08:47p  06:23a |      Set  10:10p   31%|
|Thu 21| 07:28a  07:42p  12:13 | 08:45p  06:24a |      Set  10:51p   41%|
|Fri 22| 07:29a  07:40p  12:10 | 08:43p  06:26a |F Qtr Set  11:45p   52%|
|Sat 23| 07:30a  07:38p  12:07 | 08:41p  06:27a |      Set  12:52a   63%|
+------+-----------------------+----------------+-----------------------+
|Sun 24| 07:32a  07:36p  12:04 | 08:39p  06:28a |      Set  02:11a   74%|
|Mon 25| 07:33a  07:34p  12:01 | 08:38p  06:30a |      Set  03:34a   84%|
|Tue 26| 07:34a  07:33p  11:58 | 08:36p  06:31a |      Set  04:59a   91%|
|Wed 27| 07:35a  07:31p  11:55 | 08:34p  06:32a |      Set  06:22a   97%|
|Thu 28| 07:36a  07:29p  11:52 | 08:32p  06:33a |      Set  07:43a  100%|
|Fri 29| 07:38a  07:27p  11:49 | 08:30p  06:35a |Full  Rise 07:45p   99%|
|Sat 30| 07:39a  07:25p  11:46 | 08:28p  06:36a |      Rise 08:07p   96%|
+-----------------------------------------------------------------------+
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunrise and sunset

Generated using my LookingUp for DOS program.

Categories: Ephemeris Program, Month preview, Observing Tags: September 2023

Ephemeris: 08/01/2023 – Looking ahead to August skies

August 1, 2023 bobmoler Comments off

This is Ephemeris for Tuesday, August 1st. Today the Sun will be up for 14 hours and 39 minutes, setting at 9:08, and it will rise tomorrow at 6:29. The Moon, at full today, will rise at 9:44 this evening.

Let’s look ahead at the month of August in the skies. Daylight hours will decrease from 14 hours and 39 minutes today to 13 hours 17 minutes on the 31st. The altitude of the Sun at local noon, that is degrees of angle above the southern horizon, will decrease from 63 degrees today to just over 53 degrees on the 31st. Straits area listeners can subtract one more degree from those angles. Local noon, when the Sun is due south, is about 1:43 p.m. The Perseid meteor shower will reach its peak on the morning of the13th. The Moon will not interfere until it rises at 3:39 am, but then it’s only a waning crescent. A few Perseid meteors can be seen even now, nearly two weeks before the peak. They will seem to come from the northeastern part of the sky.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EDT, UT –4 hours). They may be different for your location.

Addendum

August Evening Star Chart

Star Chart for August 2023 (10 p.m. EDT, August 15, 2023). Click or tap on the image to enlarge it. Created with my LookingUp program.

The planets and stars are plotted for the 15th at 10 pm EDT in the evening and 5 am. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.

Note the chart times are for the 15th. For each week before the 15th, add ½ hour (28 minutes if you’re picky). For each week after the 15th, subtract ½ hour. The planet positions are updated each Wednesday on this blog. See them for planet positions on dates other than the 15th.

August Morning Star Chart

Star Chart for August mornings, (5 a.m. EDT, August 15, 2023). Click or tap on the image to enlarge it. Created with my LookingUp program.

For a list of constellation names to go with the abbreviations, click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris, the North Star.
Leaky dipper drips on Leo.
Follow the arc of the handle of the Big Dipper to the star Arcturus, and
Extend like a spike to Spica.
The Summer Triangle is in red.
PerR is the radiant of the Perseid meteor shower (Peaks on the morning of the 13th)

Twilight Limits, Nautical and Astronomical

			EDT
	Morning	Twilight	Evening	Twilight	Dark	Night	Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2023-08-01	4h30m	5h19m	22h27m	23h16m	–	–	1.00
2023-08-02	4h32m	5h20m	22h26m	23h14m	–	–	0.97
2023-08-03	4h34m	5h22m	22h24m	23h12m	–	–	0.91
2023-08-04	4h36m	5h23m	22h22m	23h09m	–	–	0.83
2023-08-05	4h38m	5h25m	22h21m	23h07m	23h07m	23h23m	0.74
2023-08-06	4h40m	5h26m	22h19m	23h05m	23h05m	23h43m	0.63
2023-08-07	4h42m	5h28m	22h17m	23h03m	23h03m	–	0.52
2023-08-08	4h44m	5h29m	22h15m	23h01m	23h01m	0h06m	0.42
2023-08-09	4h46m	5h31m	22h14m	22h59m	22h59m	0h32m	0.32
2023-08-10	4h47m	5h32m	22h12m	22h57m	22h57m	1h04m	0.23
2023-08-11	4h49m	5h34m	22h10m	22h54m	22h54m	1h44m	0.15
2023-08-12	4h51m	5h35m	22h08m	22h52m	22h52m	2h32m	0.09
2023-08-13	4h53m	5h37m	22h06m	22h50m	22h50m	3h28m	0.04
2023-08-14	4h55m	5h38m	22h05m	22h48m	22h48m	4h31m	0.01
2023-08-15	4h57m	5h40m	22h03m	22h46m	22h46m	4h57m	0.00
2023-08-16	4h58m	5h41m	22h01m	22h43m	22h43m	4h58m	0.01
2023-08-17	5h00m	5h43m	21h59m	22h41m	22h41m	5h00m	0.03
2023-08-18	5h02m	5h44m	21h57m	22h39m	22h39m	5h02m	0.07
2023-08-19	5h04m	5h45m	21h55m	22h37m	22h37m	5h04m	0.13
2023-08-20	5h06m	5h47m	21h53m	22h34m	22h34m	5h06m	0.20
2023-08-21	5h07m	5h48m	21h51m	22h32m	22h49m	5h07m	0.28
2023-08-22	5h09m	5h50m	21h49m	22h30m	23h10m	5h09m	0.38
2023-08-23	5h11m	5h51m	21h47m	22h28m	23h37m	5h11m	0.48
2023-08-24	5h13m	5h53m	21h45m	22h25m	–	5h13m	0.59
2023-08-25	5h14m	5h54m	21h43m	22h23m	0h12m	5h14m	0.69
2023-08-26	5h16m	5h56m	21h41m	22h21m	0h58m	5h16m	0.79
2023-08-27	5h18m	5h57m	21h39m	22h19m	2h00m	5h18m	0.88
2023-08-28	5h19m	5h58m	21h37m	22h17m	3h15m	5h19m	0.95
2023-08-29	5h21m	6h00m	21h35m	22h14m	4h39m	5h21m	0.99
2023-08-30	5h22m	6h01m	21h33m	22h12m	–	–	1.00
2023-08-31	5h24m	6h03m	21h31m	22h10m	–	–	0.98

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

Date          Time    Event
Aug  1  Tu            Venus: 18.7° E
     1  Tu   2:31 pm  Full Sturgeon Moon
     2  We   1:52 am  Moon Perigee: 357,300 km
     3  Th   6:21 am  Moon-Saturn: 2.4° N
     6  Su  10:46 pm  Moon Ascending Node
     8  Tu   5:41 am  Moon-Jupiter: 3° S
     8  Tu   6:28 am  Last Quarter
     9  We   8:16 am  Moon-Pleiades: 1.6° N
     9  We   9:59 pm  Mercury Elongation: 27.4° E
    12  Sa   3:39 am  Moon North Dec.: 28° N
    13  Su   3:02 am  Mercury-Mars: 4.7° N
    13  Su   3:29 am  Perseid Meteor Shower: ZHR = 90
    13  Su   7:10 am  Venus Inferior Conj.
    13  Su   5:36 pm  Moon-Pollux: 1.9° N
    16  We   5:38 am  New Moon
    16  We   7:55 am  Moon Apogee: 406,600 km
    18  Fr   7:06 pm  Moon-Mars: 2.4° S
    21  Mo   5:28 am  Moon-Spica: 2.8° S
    21  Mo  12:23 pm  Moon Descending Node
    24  Th   5:57 am  First Quarter
    24  Th   9:30 pm  Moon-Antares: 1.1° S
    26  Sa   4:22 pm  Moon South Dec.: 28.1° S
    27  Su   3:52 am  Saturn Opposition
    30  We  11:51 am  Moon Perigee: 357,200 km
    30  We   2:03 pm  Moon-Saturn: 2.4° N
    30  We   9:35 pm  Full Blue Moon

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site, you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

     LU                  Ephemeris of Sky Events for Interlochen/TC
     August 2023    Local time zone: EDT
     +-----------------------------------------------------------------------+
     | DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
     |      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
     +=======================================================================+
     |Tue  1| 06:28a  09:08p  14:39 | 11:12p  04:24a |Full  Rise 09:44p  100%|
     |Wed  2| 06:29a  09:07p  14:37 | 11:10p  04:26a |      Rise 10:15p   98%|
     |Thu  3| 06:31a  09:06p  14:35 | 11:08p  04:28a |      Rise 10:40p   92%|
     |Fri  4| 06:32a  09:04p  14:32 | 11:06p  04:30a |      Rise 11:02p   85%|
     |Sat  5| 06:33a  09:03p  14:30 | 11:04p  04:31a |      Rise 11:22p   76%|
     +------+-----------------------+----------------+-----------------------+
     |Sun  6| 06:34a  09:02p  14:27 | 11:01p  04:33a |      Rise 11:43p   65%|
     |Mon  7| 06:35a  09:00p  14:25 | 10:59p  04:35a |      Rise 12:06a   55%|
     |Tue  8| 06:36a  08:59p  14:22 | 10:57p  04:37a |L Qtr Rise 12:32a   44%|
     |Wed  9| 06:37a  08:57p  14:19 | 10:55p  04:39a |      Rise 01:04a   34%|
     |Thu 10| 06:39a  08:56p  14:17 | 10:53p  04:41a |      Rise 01:43a   25%|
     |Fri 11| 06:40a  08:54p  14:14 | 10:51p  04:43a |      Rise 02:32a   17%|
     |Sat 12| 06:41a  08:53p  14:12 | 10:48p  04:45a |      Rise 03:28a   10%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 13| 06:42a  08:51p  14:09 | 10:46p  04:47a |      Rise 04:30a    5%|
     |Mon 14| 06:43a  08:50p  14:06 | 10:44p  04:48a |      Rise 05:35a    2%|
     |Tue 15| 06:44a  08:48p  14:03 | 10:42p  04:50a |      Rise 06:41a    0%|
     |Wed 16| 06:46a  08:47p  14:01 | 10:40p  04:52a |New   Set  09:21p    0%|
     |Thu 17| 06:47a  08:45p  13:58 | 10:37p  04:54a |      Set  09:40p    2%|
     |Fri 18| 06:48a  08:44p  13:55 | 10:35p  04:56a |      Set  09:57p    6%|
     |Sat 19| 06:49a  08:42p  13:52 | 10:33p  04:57a |      Set  10:13p   11%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 20| 06:50a  08:40p  13:49 | 10:31p  04:59a |      Set  10:30p   18%|
     |Mon 21| 06:52a  08:39p  13:47 | 10:28p  05:01a |      Set  10:48p   26%|
     |Tue 22| 06:53a  08:37p  13:44 | 10:26p  05:03a |      Set  11:09p   36%|
     |Wed 23| 06:54a  08:35p  13:41 | 10:24p  05:05a |      Set  11:36p   46%|
     |Thu 24| 06:55a  08:33p  13:38 | 10:22p  05:06a |F Qtr Set  12:11a   56%|
     |Fri 25| 06:56a  08:32p  13:35 | 10:19p  05:08a |      Set  12:57a   67%|
     |Sat 26| 06:57a  08:30p  13:32 | 10:17p  05:10a |      Set  01:59a   77%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 27| 06:59a  08:28p  13:29 | 10:15p  05:11a |      Set  03:14a   86%|
     |Mon 28| 07:00a  08:26p  13:26 | 10:13p  05:13a |      Set  04:38a   93%|
     |Tue 29| 07:01a  08:25p  13:23 | 10:10p  05:15a |      Set  06:05a   98%|
     |Wed 30| 07:02a  08:23p  13:20 | 10:08p  05:16a |Full  Rise 08:39p  100%|
     |Thu 31| 07:03a  08:21p  13:17 | 10:06p  05:18a |      Rise 09:02p   99%|
     +-----------------------------------------------------------------------+
     * Astronomical Twilight
     ** Moonrise or moonset, whichever occurs between sunrise and sunset

Generated using my LookingUp for DOS program.

Categories: Ephemeris Program, Month preview Tags: August 2023

06/30/2023 – Ephemeris – Previewing July’s skies

June 30, 2023 bobmoler Comments off

This is Bob Moler with Ephemeris for International Asteroid Day, Friday, June 30th. Today the Sun will be up for 15 hours and 31 minutes, setting at 9:32, and it will rise tomorrow at 6:01. The Moon, 3 days before full, will set at 3:45 tomorrow morning.

Let’s preview July’s skies. The Sun, having reached its northern solstice, is beginning to slide southward again, at first imperceptibly, then with greater speed. The daylight hours will decrease from 15 hours and 31 minutes tomorrow to 14 hours 42 minutes at month’s end. The daylight hours will be slightly shorter south of Interlochen, and slightly longer to the north. The altitude of the Sun at local noon, when it is due south, will decrease from 68 degrees now to 63 degrees at month’s end. The Sun will be a degree lower in the Straits area. Despite the warmth, the Earth will reach its greatest distance from the Sun next Thursday, the 6th. On that day, the Earth will reach 94.5 million miles (152.1 million kilometers) from the Sun.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EDT, UT –4 hours). They may be different for your location.

Addendum

July Evening Star Chart

Star Chart for July 2023 (11 p.m. EDT, July 15, 2023). Created using my LookingUp program. Click or tap on the image to enlarge it.

The planets and stars are plotted for the 15th at 11 p.m. EDT in the evening and 4 a.m. for the morning chart. These are the chart times. Note that Interlochen/Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.
Note, the chart times of 11 p.m. and 4 a.m. are for the 15th. For each week before the 15th, add ½ hour (28 minutes if you’re picky). For each week after the 15th, subtract ½ hour, or 28 minutes. The planet positions are updated each Wednesday on this blog. For planet positions on dates other than the 15th, check the Wednesday planet posts on this blog for weekly positions.

July Morning Star Chart

Star Chart for July mornings, 2023 (4 am EDT, July 15, 2023). Created using my LookingUp program. Click or tap on the image to enlarge it.

For a list of constellation names to go with the abbreviations, click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris, the North Star.
Leaky dipper drips on Leo.
Follow the arc of the handle of the Big Dipper to the star Arcturus, and
Extend like a spike to Spica.
The Summer Triangle is in red.
DAqR is the radiant of the South Delta Aquariid meteor shower (Peaks on the morning of the 28th)

Twilight Limits, Nautical and Astronomical

			EDT
	Morning	Twilight	Evening	Twilight	Dark	Night	Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2023-07-01	3h38m	4h41m	23h00m	0h03m	–	–	0.98
2023-07-02	3h39m	4h42m	23h00m	0h02m	–	–	1.00
2023-07-03	3h40m	4h43m	22h59m	0h01m	–	–	0.99
2023-07-04	3h42m	4h43m	22h59m	0h00m	–	–	0.96
2023-07-05	3h43m	4h44m	22h58m	0h00m	–	–	0.89
2023-07-06	3h44m	4h45m	22h58m	23h59m	23h59m	–	0.81
2023-07-07	3h46m	4h46m	22h57m	23h57m	23h57m	0h16m	0.71
2023-07-08	3h47m	4h47m	22h56m	23h56m	23h56m	0h39m	0.60
2023-07-09	3h49m	4h48m	22h56m	23h55m	23h55m	0h59m	0.49
2023-07-10	3h50m	4h49m	22h55m	23h54m	23h54m	1h19m	0.38
2023-07-11	3h52m	4h50m	22h54m	23h53m	23h53m	1h40m	0.28
2023-07-12	3h53m	4h52m	22h53m	23h51m	23h51m	2h03m	0.19
2023-07-13	3h55m	4h53m	22h52m	23h50m	23h50m	2h30m	0.12
2023-07-14	3h57m	4h54m	22h51m	23h48m	23h48m	3h04m	0.06
2023-07-15	3h58m	4h55m	22h50m	23h47m	23h47m	3h46m	0.02
2023-07-16	4h00m	4h56m	22h49m	23h45m	23h45m	4h00m	0.00
2023-07-17	4h02m	4h58m	22h48m	23h44m	23h44m	4h02m	0.00
2023-07-18	4h04m	4h59m	22h47m	23h42m	23h42m	4h04m	0.02
2023-07-19	4h05m	5h00m	22h46m	23h40m	23h40m	4h05m	0.05
2023-07-20	4h07m	5h02m	22h44m	23h39m	23h39m	4h07m	0.10
2023-07-21	4h09m	5h03m	22h43m	23h37m	23h37m	4h09m	0.17
2023-07-22	4h11m	5h04m	22h42m	23h35m	23h51m	4h11m	0.25
2023-07-23	4h13m	5h06m	22h41m	23h33m	–	4h13m	0.33
2023-07-24	4h15m	5h07m	22h39m	23h31m	0h07m	4h15m	0.43
2023-07-25	4h17m	5h08m	22h38m	23h30m	0h25m	4h17m	0.53
2023-07-26	4h19m	5h10m	22h36m	23h28m	0h44m	4h19m	0.63
2023-07-27	4h21m	5h11m	22h35m	23h26m	1h08m	4h21m	0.73
2023-07-28	4h23m	5h13m	22h33m	23h24m	1h39m	4h23m	0.83
2023-07-29	4h24m	5h14m	22h32m	23h22m	2h19m	4h24m	0.90
2023-07-30	4h26m	5h16m	22h30m	23h20m	3h14m	4h26m	0.96
2023-07-31	4h28m	5h17m	22h29m	23h18m	4h24m	4h28m	0.99

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

Jul  1  Sa            Venus: 41.7° E
     1  Sa  12:46 am  Mercury Superior Conj.
     1  Sa   2:48 am  Venus-Mars: 3.6° N Quasi-conjunction
     1  Sa   3:20 am  Moon-Antares: 1.5° S
     2  Su   9:23 pm  Moon South Dec.: 27.8° S
     3  Mo   7:39 am  Full Buck Moon
     4  Tu   6:28 pm  Moon Perigee: 360,200 km
     6  Th   4:59 am  Aphelion: 1.0167 AU
     6  Th  11:05 pm  Moon-Saturn: 2.7° N
     7  Fr            Venus greatest brilliancy, magnitude -4.7
     9  Su   9:48 pm  Last Quarter
    10  Mo   1:18 am  Mars-Regulus:  0.6° N
    10  Mo   9:23 pm  Moon Ascending Node
    11  Tu   5:18 pm  Moon-Jupiter: 2.3° S
    13  Th   2:31 am  Moon-Pleiades: 1.8° N
    14  Fr   6:33 pm  Mercury-Beehive:  0.2° N
    15  Sa  10:40 pm  Moon North Dec.: 27.8° N
    16  Su   3:49 am  Venus-Regulus: 3.3° S
    17  Mo   2:32 pm  New Moon
    20  Th   2:56 am  Moon Apogee: 406,300 km
    20  Th  12:00 am  Moon-Mars: 3.6° S
    25  Tu  11:05 am  Moon Descending Node
    25  Tu   6:07 pm  First Quarter
    27  Th   7:00 am  Mercury-Venus: 5.1° N
    28  Fr  11:35 am  Delta Aquariid Shower: ZHR = 20
    28  Fr   1:11 pm  Moon-Antares: 1.3° S
    28  Fr   2:21 pm  Mercury-Regulus:  0.1° S
    30  Su   7:13 am  Moon South Dec.: 27.9° S
Aug  1  Tu            Venus: 18.7° E

All event times are given for UTC-5:00: Eastern Standard Time before the 14th or UTC-4:00 Daylight Saving Time thereafter.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Note that the site is now kept up for archival purposes. Fred Espenak retired from NASA several years ago and has his own site, AstroPixels, which contain the same information: http://astropixels.com/almanac/almanac.html. However it uses standard time all year.

NASA Calendar of Planetary Events

     LU                  Ephemeris of Sky Events for Interlochen/TC
June, 2023    Local time zone: EDT
+-----------------------------------------------------------------------+
| DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
|      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
+=======================================================================+
|Thu  1| 06:00a  09:21p  15:20 | 10:44p  04:37a |      Set  04:43a   94%|
|Fri  2| 05:59a  09:22p  15:22 | 10:45p  04:36a |      Set  05:14a   98%|
|Sat  3| 05:59a  09:22p  15:23 | 10:46p  04:35a |Full  Rise 09:27p  100%|
+------+-----------------------+----------------+-----------------------+
|Sun  4| 05:59a  09:23p  15:24 | 10:47p  04:35a |      Rise 10:42p   99%|
|Mon  5| 05:58a  09:24p  15:25 | 10:48p  04:34a |      Rise 11:47p   95%|
|Tue  6| 05:58a  09:25p  15:26 | 10:49p  04:33a |      Rise 12:39a   89%|
|Wed  7| 05:57a  09:25p  15:27 | 10:50p  04:33a |      Rise 01:18a   80%|
|Thu  8| 05:57a  09:26p  15:28 | 10:51p  04:32a |      Rise 01:48a   70%|
|Fri  9| 05:57a  09:27p  15:29 | 10:52p  04:32a |      Rise 02:13a   59%|
|Sat 10| 05:57a  09:27p  15:30 | 10:53p  04:31a |L Qtr Rise 02:34a   48%|
+------+-----------------------+----------------+-----------------------+
|Sun 11| 05:56a  09:28p  15:31 | 10:53p  04:31a |      Rise 02:53a   37%|
|Mon 12| 05:56a  09:28p  15:31 | 10:54p  04:31a |      Rise 03:13a   27%|
|Tue 13| 05:56a  09:29p  15:32 | 10:55p  04:30a |      Rise 03:34a   18%|
|Wed 14| 05:56a  09:29p  15:33 | 10:55p  04:30a |      Rise 03:59a   10%|
|Thu 15| 05:56a  09:30p  15:33 | 10:56p  04:30a |      Rise 04:28a    5%|
|Fri 16| 05:56a  09:30p  15:33 | 10:56p  04:30a |      Rise 05:04a    2%|
|Sat 17| 05:56a  09:30p  15:34 | 10:57p  04:30a |      Rise 05:49a    0%|
+------+-----------------------+----------------+-----------------------+
|Sun 18| 05:56a  09:31p  15:34 | 10:57p  04:30a |New   Set  10:36p    1%|
|Mon 19| 05:56a  09:31p  15:34 | 10:57p  04:30a |      Set  11:22p    3%|
|Tue 20| 05:56a  09:31p  15:34 | 10:58p  04:30a |      Set  11:58p    8%|
|Wed 21| 05:57a  09:32p  15:34 | 10:58p  04:30a |      Set  12:27a   13%|
|Thu 22| 05:57a  09:32p  15:34 | 10:58p  04:31a |      Set  12:51a   20%|
|Fri 23| 05:57a  09:32p  15:34 | 10:58p  04:31a |      Set  01:11a   28%|
|Sat 24| 05:57a  09:32p  15:34 | 10:58p  04:31a |      Set  01:29a   37%|
+------+-----------------------+----------------+-----------------------+
|Sun 25| 05:58a  09:32p  15:34 | 10:58p  04:32a |      Set  01:45a   47%|
|Mon 26| 05:58a  09:32p  15:33 | 10:58p  04:32a |F Qtr Set  02:02a   57%|
|Tue 27| 05:59a  09:32p  15:33 | 10:58p  04:33a |      Set  02:21a   66%|
|Wed 28| 05:59a  09:32p  15:32 | 10:58p  04:33a |      Set  02:43a   76%|
|Thu 29| 05:59a  09:32p  15:32 | 10:58p  04:34a |      Set  03:10a   84%|
|Fri 30| 06:00a  09:32p  15:31 | 10:57p  04:34a |      Set  03:45a   92%|
+-----------------------------------------------------------------------+
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunrise and sunset

Created using my LookingUp for DOS output as text.

Categories: Ephemeris Program, Month preview, Observing Tags: July 2023

06/01/2023 – Ephemeris – Previewing June Skies

June 1, 2023 bobmoler Comments off

This is Bob Moler with Ephemeris for Thursday, June 1st. Today the Sun will be up for 15 hours and 20 minutes, setting at 9:21, and it will rise tomorrow at 5:59. The Moon, 2 days before full, will set at 4:43 tomorrow morning.

Let’s begin this program’s 49th trip around the Sun by previewing the skies of June. There will be a lot of Sun in June and very little night. The daylight hours will increase a bit from 15 hours and 20 minutes today to 15 hours and 34 minutes on the 21st, retreating back to 15 hours 31 minutes at month’s end. At this time of the year the sunset times for Ludington, Interlochen, Petoskey and Mackinaw City are very nearly the same. However, the sunrise times are at their most divergent. With Ludington’s sunrise being 14 minutes later than Mackinaw City’s. The altitude of the Sun above the southern horizon at local noon around 1:43 p.m. will hover around 68 to 69 degrees. Summer will start on the 21st at 10:58 a.m. Venus will look great in our skies and in telescopes this month.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EDT, UT –4 hours). They may be different for your location.

Addendum

June Evening Star Chart

Star Chart for June 2023 (11 p.m. EDT, June 15, 2023). Created using my LookingUp program. Click or tap on the image to enlarge it.

June Morning Star Chart

Star Chart for June mornings, 2023 (4 am EDT, June 15, 2023). Created using my LookingUp program. Click or tap on the image to enlarge it.

For a list of constellation names to go with the abbreviations, click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris, the North Star.
Leaky dipper drips on Leo
Follow the arc of the handle of the Big Dipper to the star Arcturus, and
Extend like a spike to Spica,

Twilight Limits, Nautical and Astronomical

			EDT
	Morning	Twilight	Evening	Twilight	Dark	Night	Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2023-06-01	3h44m	4h43m	22h46m	23h45m	–	–	0.95
2023-06-02	3h43m	4h42m	22h48m	23h47m	–	–	0.99
2023-06-03	3h41m	4h41m	22h49m	23h48m	–	–	1.00
2023-06-04	3h40m	4h40m	22h50m	23h50m	–	–	0.98
2023-06-05	3h39m	4h40m	22h51m	23h51m	–	–	0.94
2023-06-06	3h38m	4h39m	22h52m	23h53m	23h53m	–	0.87
2023-06-07	3h37m	4h38m	22h53m	23h54m	23h54m	0h39m	0.79
2023-06-08	3h36m	4h38m	22h53m	23h55m	23h55m	1h18m	0.68
2023-06-09	3h35m	4h38m	22h54m	23h56m	23h56m	1h49m	0.57
2023-06-10	3h35m	4h37m	22h55m	23h58m	23h58m	2h13m	0.46
2023-06-11	3h34m	4h37m	22h56m	23h59m	23h59m	2h34m	0.35
2023-06-12	3h33m	4h36m	22h57m	0h00m	0h00m	2h54m	0.25
2023-06-13	3h33m	4h36m	22h57m	0h01m	0h01m	3h13m	0.16
2023-06-14	3h32m	4h36m	22h58m	0h01m	0h01m	3h32m	0.09
2023-06-15	3h32m	4h36m	22h58m	0h02m	0h02m	3h32m	0.04
2023-06-16	3h32m	4h36m	22h59m	0h03m	0h03m	3h32m	0.01
2023-06-17	3h32m	4h36m	22h59m	0h04m	0h04m	3h32m	0.00
2023-06-18	3h32m	4h36m	23h00m	0h04m	0h04m	3h32m	0.01
2023-06-19	3h32m	4h36m	23h00m	0h04m	0h04m	3h32m	0.04
2023-06-20	3h32m	4h36m	23h00m	0h05m	0h05m	3h32m	0.08
2023-06-21	3h32m	4h36m	23h01m	0h05m	0h05m	3h32m	0.15
2023-06-22	3h32m	4h37m	23h01m	0h05m	0h28m	3h32m	0.22
2023-06-23	3h32m	4h37m	23h01m	0h05m	0h51m	3h32m	0.30
2023-06-24	3h33m	4h37m	23h01m	0h05m	1h11m	3h33m	0.39
2023-06-25	3h33m	4h38m	23h01m	0h05m	1h29m	3h33m	0.49
2023-06-26	3h34m	4h38m	23h01m	0h05m	1h46m	3h34m	0.59
2023-06-27	3h35m	4h39m	23h01m	0h05m	2h03m	3h35m	0.68
2023-06-28	3h35m	4h39m	23h01m	0h04m	2h22m	3h35m	0.78
2023-06-29	3h36m	4h40m	23h01m	0h04m	2h43m	3h36m	0.86
2023-06-30	3h37m	4h40m	23h00m	0h03m	3h10m	3h37m	0.93

The twilight calendar was generated using Cartes du Ciel (Sky Charts), with some corrections.

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

  Date       Time     Event
Jun  1  Th            Venus: 45.4° E
     1  Th   2:22 am  Moon Descending Node
     1  Th  11:30 pm  Mars-Beehive:  0.1° S
     3  Sa   5:19 pm  Moon-Antares: 1.6° S
     3  Sa  11:42 pm  Full Strawberry Moon
     4  Su   6:59 am  Venus Elongation: 45.4° E
     5  Mo  12:21 pm  Moon South Dec.: 27.9° S
     6  Tu   7:07 pm  Moon Perigee: 364,900 km
     9  Fr   4:19 pm  Moon-Saturn: 3° N
    10  Sa   3:31 pm  Last Quarter
    11  Su   1:50 pm  Mercury-Pleiades: 6.2° S
    13  Tu   7:05 am  Venus-Beehive:  0.5° N
    13  Tu   8:05 pm  Moon Ascending Node
    14  We   2:33 am  Moon-Jupiter: 1.6° S
    15  Th   8:47 pm  Moon-Pleiades: 2° N
    16  Fr   4:18 pm  Mercury-Aldebaran: 4.3° N
    18  Su  12:37 am  New Moon
    18  Su   5:07 pm  Moon North Dec.: 27.8° N
    20  Tu   5:10 am  Moon-Pollux: 1.9° N
    21  We   6:38 am  Moon-Beehive: 4° S
    21  We  10:58 am  Summer Solstice
    21  We   8:47 pm  Moon-Venus: 4.1° S
    22  Th   6:09 am  Moon-Mars: 4.2° S
    22  Th   2:31 pm  Moon Apogee: 405,400 km
    26  Mo   3:50 am  First Quarter
    28  We   8:22 am  Moon Descending Node
Jul  1  Sa            Venus: 41.7° E

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

Sun and Moon Rising and Setting Events

     LU                  Ephemeris of Sky Events for Interlochen/TC
June, 2023    Local time zone: EDT
+-----------------------------------------------------------------------+
| DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
|      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
+=======================================================================+
|Thu  1| 06:00a  09:21p  15:20 | 10:44p  04:37a |      Set  04:43a   94%|
|Fri  2| 05:59a  09:22p  15:22 | 10:45p  04:36a |      Set  05:14a   98%|
|Sat  3| 05:59a  09:22p  15:23 | 10:46p  04:35a |Full  Rise 09:27p  100%|
+------+-----------------------+----------------+-----------------------+
|Sun  4| 05:59a  09:23p  15:24 | 10:47p  04:35a |      Rise 10:42p   99%|
|Mon  5| 05:58a  09:24p  15:25 | 10:48p  04:34a |      Rise 11:47p   95%|
|Tue  6| 05:58a  09:25p  15:26 | 10:49p  04:33a |      Rise 12:39a   89%|
|Wed  7| 05:57a  09:25p  15:27 | 10:50p  04:33a |      Rise 01:18a   80%|
|Thu  8| 05:57a  09:26p  15:28 | 10:51p  04:32a |      Rise 01:48a   70%|
|Fri  9| 05:57a  09:27p  15:29 | 10:52p  04:32a |      Rise 02:13a   59%|
|Sat 10| 05:57a  09:27p  15:30 | 10:53p  04:31a |L Qtr Rise 02:34a   48%|
+------+-----------------------+----------------+-----------------------+
|Sun 11| 05:56a  09:28p  15:31 | 10:53p  04:31a |      Rise 02:53a   37%|
|Mon 12| 05:56a  09:28p  15:31 | 10:54p  04:31a |      Rise 03:13a   27%|
|Tue 13| 05:56a  09:29p  15:32 | 10:55p  04:30a |      Rise 03:34a   18%|
|Wed 14| 05:56a  09:29p  15:33 | 10:55p  04:30a |      Rise 03:59a   10%|
|Thu 15| 05:56a  09:30p  15:33 | 10:56p  04:30a |      Rise 04:28a    5%|
|Fri 16| 05:56a  09:30p  15:33 | 10:56p  04:30a |      Rise 05:04a    2%|
|Sat 17| 05:56a  09:30p  15:34 | 10:57p  04:30a |      Rise 05:49a    0%|
+------+-----------------------+----------------+-----------------------+
|Sun 18| 05:56a  09:31p  15:34 | 10:57p  04:30a |New   Set  10:36p    1%|
|Mon 19| 05:56a  09:31p  15:34 | 10:57p  04:30a |      Set  11:22p    3%|
|Tue 20| 05:56a  09:31p  15:34 | 10:58p  04:30a |      Set  11:58p    8%|
|Wed 21| 05:57a  09:32p  15:34 | 10:58p  04:30a |      Set  12:27a   13%|
|Thu 22| 05:57a  09:32p  15:34 | 10:58p  04:31a |      Set  12:51a   20%|
|Fri 23| 05:57a  09:32p  15:34 | 10:58p  04:31a |      Set  01:11a   28%|
|Sat 24| 05:57a  09:32p  15:34 | 10:58p  04:31a |      Set  01:29a   37%|
+------+-----------------------+----------------+-----------------------+
|Sun 25| 05:58a  09:32p  15:34 | 10:58p  04:32a |      Set  01:45a   47%|
|Mon 26| 05:58a  09:32p  15:33 | 10:58p  04:32a |F Qtr Set  02:02a   57%|
|Tue 27| 05:59a  09:32p  15:33 | 10:58p  04:33a |      Set  02:21a   66%|
|Wed 28| 05:59a  09:32p  15:32 | 10:58p  04:33a |      Set  02:43a   76%|
|Thu 29| 05:59a  09:32p  15:32 | 10:58p  04:34a |      Set  03:10a   84%|
|Fri 30| 06:00a  09:32p  15:31 | 10:57p  04:34a |      Set  03:45a   92%|
+-----------------------------------------------------------------------+
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunrise and sunset

Generated using my LookingUp for DOS program.

Categories: Ephemeris Program, Month preview Tags: June preview

05/01/2023 – Ephemeris – Previewing May Skies

May 1, 2023 bobmoler Comments off

This is Ephemeris for Monday, the first of May. Today the Sun will be up for 14 hours and 14 minutes, setting at 8:47, and it will rise tomorrow at 6:31. The Moon, halfway from first quarter to full, will set at 5:20 tomorrow morning.

Let’s look ahead at the month of May, the month when the promise of spring is finally fulfilled. Daylight hours in the Interlochen/Traverse City area will increase from 14 hours and 14 minutes today to 15 hours 19 minutes on the 31st. The altitude, or angle, of the Sun above the southern horizon at local noon will ascend from 60 degrees today to 67 degrees at month’s end. The altitude of the Sun in the Straits area will be a degree lower than that. Local apparent noon this month, when the Sun passes due south, will be about 1:38 p.m. Early this month we’ll have The Eta Aquariid meteor shower early in the morning, though it will be hindered by a bright Moon. Venus and Mars are our evening planets. Venus will continue to approach Mars all month.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EST, UT –4 hours). They may be different for your location.

Addendum

May Evening Star Chart

Star Chart for May 2023 (11 p.m. EDT, May 15, 2023). Click or tap on image to enlarge it. Created using my LookingUp program.

The planets and stars are plotted for the 15th at 11 p.m. EDT in the evening and 4 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.
Note, the chart times of 11 p.m. and 4 a.m. are for the 15th. For each week before the 15th, add ½ hour (28 minutes if you’re picky). For each week after the 15th, subtract ½ hour or 28 minutes. The planet positions are updated each Wednesday on this blog. For planet positions on dates other than the 15th, check the Wednesday planet posts on this blog for weekly positions.

May Morning Star Chart

Star Chart for May mornings, 2023 (4 a.m. EDT, May 15, 2023). Click or tap on image to enlarge it. Created using my LookingUp program.

For a list of constellation names to go with the abbreviations, click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris, the North Star.
Leaky dipper drips on Leo
Follow the arc of the handle of the Big Dipper to the star Arcturus, and
Extend like a spike to Spica,
EaqR is the radiant of the Eta Aquariid meteor shower that peaks on the 5th.

Twilight Limits, Nautical and Astronomical

			EDT
	Morning	Twilight	Evening	Twilight	Dark	Night	Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2023-05-01	4h41m	5h26m	22h02m	22h46m	–	–	0.87
2023-05-02	4h39m	5h24m	22h03m	22h48m	–	–	0.93
2023-05-03	4h37m	5h22m	22h05m	22h50m	–	–	0.97
2023-05-04	4h35m	5h20m	22h06m	22h52m	–	–	1.00
2023-05-05	4h33m	5h19m	22h08m	22h54m	–	–	1.00
2023-05-06	4h31m	5h17m	22h10m	22h56m	–	–	0.97
2023-05-07	4h29m	5h15m	22h11m	22h58m	22h58m	23h48m	0.93
2023-05-08	4h27m	5h14m	22h13m	23h00m	23h00m	–	0.85
2023-05-09	4h24m	5h12m	22h14m	23h02m	23h02m	0h58m	0.76
2023-05-10	4h22m	5h10m	22h16m	23h04m	23h04m	1h56m	0.66
2023-05-11	4h20m	5h09m	22h17m	23h06m	23h06m	2h42m	0.55
2023-05-12	4h18m	5h07m	22h19m	23h08m	23h08m	3h17m	0.43
2023-05-13	4h16m	5h06m	22h20m	23h10m	23h10m	3h45m	0.32
2023-05-14	4h14m	5h04m	22h22m	23h12m	23h12m	4h08m	0.22
2023-05-15	4h12m	5h03m	22h23m	23h14m	23h14m	4h12m	0.14
2023-05-16	4h10m	5h01m	22h25m	23h16m	23h16m	4h10m	0.07
2023-05-17	4h09m	5h00m	22h26m	23h18m	23h18m	4h09m	0.02
2023-05-18	4h07m	4h58m	22h28m	23h20m	23h20m	4h07m	0.00
2023-05-19	4h05m	4h57m	22h29m	23h22m	23h22m	4h05m	0.00
2023-05-20	4h03m	4h56m	22h31m	23h23m	23h23m	4h03m	0.03
2023-05-21	4h01m	4h54m	22h32m	23h25m	23h51m	4h01m	0.07
2023-05-22	3h59m	4h53m	22h34m	23h27m	–	3h59m	0.12
2023-05-23	3h58m	4h52m	22h35m	23h29m	0h43m	3h58m	0.20
2023-05-24	3h56m	4h51m	22h36m	23h31m	1h26m	3h56m	0.28
2023-05-25	3h54m	4h49m	22h38m	23h33m	1h59m	3h54m	0.37
2023-05-26	3h53m	4h48m	22h39m	23h35m	2h26m	3h53m	0.46
2023-05-27	3h51m	4h47m	22h40m	23h37m	2h48m	3h51m	0.55
2023-05-28	3h49m	4h46m	22h42m	23h38m	3h07m	3h49m	0.65
2023-05-29	3h48m	4h45m	22h43m	23h40m	3h25m	3h48m	0.74
2023-05-30	3h47m	4h44m	22h44m	23h42m	3h42m	3h47m	0.82
2023-05-31	3h45m	4h43m	22h45m	23h44m	–	–	0.90

The twilight calendar was generated using Cartes du Ciel (Sky Charts), with some corrections.

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

LU              Ephemeris of Sky Events for Interlochen/TC
May 2023    Local time zone: EDT
+-----------------------------------------------------------------------+
| DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
|      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
+=======================================================================+
|Mon  1| 06:33a  08:47p  14:14 | 09:59p  05:21a |      Set  05:20a   86%|
|Tue  2| 06:31a  08:48p  14:17 | 10:01p  05:19a |      Set  05:37a   92%|
|Wed  3| 06:30a  08:49p  14:19 | 10:02p  05:17a |      Set  05:56a   97%|
|Thu  4| 06:28a  08:51p  14:22 | 10:04p  05:15a |      Set  06:18a   99%|
|Fri  5| 06:27a  08:52p  14:25 | 10:06p  05:14a |Full  Rise 09:13p  100%|
|Sat  6| 06:25a  08:53p  14:27 | 10:07p  05:12a |      Rise 10:31p   98%|
+------+-----------------------+----------------+-----------------------+
|Sun  7| 06:24a  08:54p  14:30 | 10:09p  05:10a |      Rise 11:47p   94%|
|Mon  8| 06:23a  08:56p  14:32 | 10:10p  05:08a |      Rise 12:57a   87%|
|Tue  9| 06:22a  08:57p  14:35 | 10:12p  05:07a |      Rise 01:56a   78%|
|Wed 10| 06:20a  08:58p  14:37 | 10:13p  05:05a |      Rise 02:42a   68%|
|Thu 11| 06:19a  08:59p  14:40 | 10:15p  05:04a |      Rise 03:17a   57%|
|Fri 12| 06:18a  09:00p  14:42 | 10:16p  05:02a |L Qtr Rise 03:44a   45%|
|Sat 13| 06:17a  09:01p  14:44 | 10:18p  05:00a |      Rise 04:07a   34%|
+------+-----------------------+----------------+-----------------------+
|Sun 14| 06:15a  09:03p  14:47 | 10:19p  04:59a |      Rise 04:28a   24%|
|Mon 15| 06:14a  09:04p  14:49 | 10:21p  04:57a |      Rise 04:47a   15%|
|Tue 16| 06:13a  09:05p  14:51 | 10:23p  04:56a |      Rise 05:08a    8%|
|Wed 17| 06:12a  09:06p  14:53 | 10:24p  04:54a |      Rise 05:30a    3%|
|Thu 18| 06:11a  09:07p  14:55 | 10:25p  04:53a |      Rise 05:56a    1%|
|Fri 19| 06:10a  09:08p  14:58 | 10:27p  04:52a |New   Set  09:38p    0%|
|Sat 20| 06:09a  09:09p  15:00 | 10:28p  04:50a |      Set  10:48p    2%|
+------+-----------------------+----------------+-----------------------+
|Sun 21| 06:08a  09:10p  15:02 | 10:30p  04:49a |      Set  11:50p    6%|
|Mon 22| 06:07a  09:11p  15:04 | 10:31p  04:48a |      Set  12:43a   11%|
|Tue 23| 06:06a  09:12p  15:05 | 10:33p  04:46a |      Set  01:25a   18%|
|Wed 24| 06:06a  09:13p  15:07 | 10:34p  04:45a |      Set  01:59a   26%|
|Thu 25| 06:05a  09:14p  15:09 | 10:35p  04:44a |      Set  02:26a   35%|
|Fri 26| 06:04a  09:15p  15:11 | 10:37p  04:43a |      Set  02:48a   44%|
|Sat 27| 06:03a  09:16p  15:13 | 10:38p  04:42a |F Qtr Set  03:07a   53%|
+------+-----------------------+----------------+-----------------------+
|Sun 28| 06:02a  09:17p  15:14 | 10:39p  04:41a |      Set  03:24a   63%|
|Mon 29| 06:02a  09:18p  15:16 | 10:40p  04:40a |      Set  03:41a   72%|
|Tue 30| 06:01a  09:19p  15:17 | 10:42p  04:39a |      Set  03:59a   81%|
|Wed 31| 06:01a  09:20p  15:19 | 10:43p  04:38a |      Set  04:19a   88%|
+-----------------------------------------------------------------------+
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunset and the next
   sunrise

Categories: Ephemeris Program, Month preview Tags: May 2023, Preview

01/31/2023 – Ephemeris – Previewing February skies

January 31, 2023 bobmoler Comments off

This is Ephemeris for Tuesday, January 31st. Today the Sun will be up for 9 hours and 46 minutes, setting at 5:49, and it will rise tomorrow at 8:02. The Moon, 3 days past first quarter, will set at 5:36 tomorrow morning.

February is the shortest month, even so, the daylight hours throughout the month will be getting longer. Daylight hours will expand from 9 hours and 49 minutes tomorrow the first, to 11 hours and 6 minutes on the 28th. The sunrise time will drop from 8:02 tomorrow to 7:22 at month’s end. The sunset times will extend from 5:51 tomorrow to 6:28 on the 28th. Along with that, the altitude of the Sun at local noon will increase from 28 degrees tomorrow to nearly 38 degrees at month’s end. Local noon, by the way, for Interlochen and Traverse City, when the Sun is due south, will be 12:57 p.m. at mid-month. Venus and Jupiter will appear to approach each other all month, in the western evening sky, coming into conjunction March 1st.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EST, UT –5 hours). They may be different for your location.

Addendum

February Evening Star Chart

Star Chart for February 2023, (9 p.m. EST February 15, 2023). Created using my LookingUp program. Click on image to enlarge.

The planets and stars are plotted for the 15th at 9 p.m. EST in the evening and 6 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere (rotating star finder) you may have to set it to 1 hour 45 minutes earlier than the current time.

Note the chart times of 9 p.m. and 6 a.m. are for the 15th. For each week before the 15th, add ½ hour (28 minutes if you’re picky). For each week after the 15th, subtract ½ hour. The planet positions are updated each Wednesday on this blog. For planet positions on dates other than the 15th, check the Wednesday planet posts on this blog.

February Morning Star Chart

Star Chart for February mornings, 2023 (6 a.m. EST February 15, 2023). No naked-eye planets are visible. Created using my LookingUp program. Click on image to enlarge.

For a list of constellation names to go with the abbreviations, click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris, the North Star.
Follow the arc of the handle of the Big Dipper to the star Arcturus, and
Extend like a spike to Spica,
The Summer Triangle is in red.

Twilight Limits, Nautical and Astronomical

			EST
	Morning	Twilight	Evening	Twilight	Dark	Night	Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2023-02-01	6h22m	6h57m	18h56m	19h30m	5h37m	6h22m	0.89
2023-02-02	6h21m	6h56m	18h57m	19h31m	–	–	0.94
2023-02-03	6h20m	6h54m	18h58m	19h32m	–	–	0.98
2023-02-04	6h19m	6h53m	19h00m	19h34m	–	–	1.00
2023-02-05	6h18m	6h52m	19h01m	19h35m	–	–	1.00
2023-02-06	6h17m	6h51m	19h02m	19h36m	–	–	0.98
2023-02-07	6h16m	6h50m	19h03m	19h37m	19h37m	19h58m	0.95
2023-02-08	6h15m	6h49m	19h05m	19h39m	19h39m	21h03m	0.90
2023-02-09	6h14m	6h48m	19h06m	19h40m	19h40m	22h08m	0.83
2023-02-10	6h13m	6h46m	19h07m	19h41m	19h41m	23h14m	0.75
2023-02-11	6h11m	6h45m	19h09m	19h42m	19h42m	–	0.65
2023-02-12	6h10m	6h44m	19h10m	19h44m	19h44m	0h24m	0.55
2023-02-13	6h09m	6h42m	19h11m	19h45m	19h45m	1h36m	0.44
2023-02-14	6h07m	6h41m	19h12m	19h46m	19h46m	2h52m	0.33
2023-02-15	6h06m	6h40m	19h14m	19h47m	19h47m	4h07m	0.23
2023-02-16	6h05m	6h38m	19h15m	19h49m	19h49m	5h18m	0.14
2023-02-17	6h03m	6h37m	19h16m	19h50m	19h50m	6h03m	0.06
2023-02-18	6h02m	6h35m	19h18m	19h51m	19h51m	6h02m	0.02
2023-02-19	6h00m	6h34m	19h19m	19h53m	19h53m	6h00m	0.00
2023-02-20	5h59m	6h32m	19h20m	19h54m	19h54m	5h59m	0.01
2023-02-21	5h57m	6h31m	19h21m	19h55m	20h16m	5h57m	0.05
2023-02-22	5h56m	6h29m	19h23m	19h56m	21h34m	5h56m	0.12
2023-02-23	5h54m	6h28m	19h24m	19h58m	22h49m	5h54m	0.20
2023-02-24	5h53m	6h26m	19h25m	19h59m	–	5h53m	0.29
2023-02-25	5h51m	6h25m	19h27m	20h00m	0h03m	5h51m	0.39
2023-02-26	5h49m	6h23m	19h28m	20h02m	1h15m	5h49m	0.49
2023-02-27	5h48m	6h21m	19h29m	20h03m	2h25m	5h48m	0.59
2023-02-28	5h46m	6h20m	19h31m	20h04m	3h29m	5h46m	0.68

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2019/09/27/

NASA Calendar of Planetary Events

Feb  1  We            Venus: 24.4° E
     2  Th   3:18 am  Moon North Dec.: 27.5° N
     3  Fr   2:47 pm  Moon-Pollux: 2.1° N
     4  Sa   3:55 am  Moon Apogee: 406,500 km
     4  Sa   4:32 pm  Moon-Beehive: 3.9° S
     5  Su   1:29 pm  Full Snow Moon
    12  Su   2:31 am  Moon Descending Node
    13  Mo  11:01 am  Last Quarter
    14  Tu   1:09 pm  Moon-Antares: 1.9° S
    16  Th   9:36 am  Moon South Dec.: 27.6° S
    16  Th  11:17 am  Saturn Conjunction
    19  Su   4:06 am  Moon Perigee: 358,300 km
    20  Mo   2:06 am  New Moon
    22  We   2:57 am  Moon-Venus: 2.1° N
    22  We   4:58 pm  Moon-Jupiter: 1.2° N
    24  Fr   1:56 pm  Moon Ascending Node
    26  Su   9:42 am  Moon-Pleiades: 2.2° N
    27  Mo   3:06 am  First Quarter
    27  Mo  11:32 pm  Moon-Mars: 1.2° S
Mar  1  We            Venus: 30.6° E

All event times are given for UTC-5:00: Eastern Standard or Daylight Time

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

     LU                  Ephemeris of Sky Events for Interlochen/TC
February, 2023    Local time zone: EST
+-----------------------------------------------------------------------+
| DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
|      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
+=======================================================================+
|Wed  1| 08:02a  05:51p  09:49 | 06:57p  06:55a |      Set  06:31a   88%|
|Thu  2| 08:00a  05:52p  09:51 | 06:58p  06:54a |      Set  07:16a   93%|
|Fri  3| 07:59a  05:54p  09:54 | 06:59p  06:53a |      Set  07:54a   97%|
|Sat  4| 07:58a  05:55p  09:56 | 07:01p  06:52a |      Set  08:24a   99%|
+------+-----------------------+----------------+-----------------------+
|Sun  5| 07:57a  05:56p  09:59 | 07:02p  06:51a |Full  Rise 05:47p  100%|
|Mon  6| 07:55a  05:58p  10:02 | 07:03p  06:50a |      Rise 06:53p   98%|
|Tue  7| 07:54a  05:59p  10:05 | 07:05p  06:49a |      Rise 07:58p   95%|
|Wed  8| 07:53a  06:01p  10:07 | 07:06p  06:48a |      Rise 09:02p   91%|
|Thu  9| 07:52a  06:02p  10:10 | 07:07p  06:47a |      Rise 10:07p   84%|
|Fri 10| 07:50a  06:04p  10:13 | 07:08p  06:45a |      Rise 11:14p   76%|
|Sat 11| 07:49a  06:05p  10:16 | 07:10p  06:44a |      Rise 12:23a   67%|
+------+-----------------------+----------------+-----------------------+
|Sun 12| 07:47a  06:06p  10:19 | 07:11p  06:43a |      Rise 01:36a   57%|
|Mon 13| 07:46a  06:08p  10:21 | 07:12p  06:41a |L Qtr Rise 02:51a   46%|
|Tue 14| 07:44a  06:09p  10:24 | 07:14p  06:40a |      Rise 04:07a   36%|
|Wed 15| 07:43a  06:11p  10:27 | 07:15p  06:39a |      Rise 05:18a   25%|
|Thu 16| 07:41a  06:12p  10:30 | 07:16p  06:37a |      Rise 06:19a   16%|
|Fri 17| 07:40a  06:13p  10:33 | 07:17p  06:36a |      Rise 07:07a    8%|
|Sat 18| 07:38a  06:15p  10:36 | 07:19p  06:34a |      Rise 07:44a    3%|
+------+-----------------------+----------------+-----------------------+
|Sun 19| 07:37a  06:16p  10:39 | 07:20p  06:33a |      Rise 08:13a    0%|
|Mon 20| 07:35a  06:18p  10:42 | 07:21p  06:31a |New   Set  06:54p    1%|
|Tue 21| 07:34a  06:19p  10:45 | 07:23p  06:30a |      Set  08:15p    4%|
|Wed 22| 07:32a  06:20p  10:48 | 07:24p  06:28a |      Set  09:33p   10%|
|Thu 23| 07:30a  06:22p  10:51 | 07:25p  06:27a |      Set  10:49p   18%|
|Fri 24| 07:29a  06:23p  10:54 | 07:27p  06:25a |      Set  12:02a   27%|
|Sat 25| 07:27a  06:24p  10:57 | 07:28p  06:24a |      Set  01:15a   37%|
+------+-----------------------+----------------+-----------------------+
|Sun 26| 07:25a  06:26p  11:00 | 07:29p  06:22a |      Set  02:24a   47%|
|Mon 27| 07:24a  06:27p  11:03 | 07:30p  06:20a |F Qtr Set  03:29a   56%|
|Tue 28| 07:22a  06:28p  11:06 | 07:32p  06:19a |      Set  04:27a   66%|
+-----------------------------------------------------------------------+
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunrise and sunset

Created using my LookingUp for MS-DOS output as HTML.

Categories: Ephemeris Program, Month preview Tags: February 2023

01/03/2023 – Ephemeris – A belated preview of January skies

January 3, 2023 bobmoler Comments off

This is Ephemeris for Tuesday, January 3rd. The Sun will rise at 8:20. It’ll be up for 8 hours and 54 minutes, setting at 5:14. The Moon, 3 days before full, will set at 6:41 tomorrow morning.

I’m starting the January preview a bit late. We’re a day past the latest sunrise at about the same time as today, 8:20 a.m. and will back down to 8:03 by the 31st. Sunset times are currently increasing by a minute a day, from 5:14 p.m. today to 5:49 at month’s end. Listeners will have about the same sunrise time in Ludington, Interlochen/Traverse City, Petoskey and Mackinaw City, but the sunset times will vary markedly with the sunset times earlier in the north and later in the south. The Quadrantid meteor shower will reach peak this evening. It will have competition all night from the bright Moon. Tomorrow, the Earth will be its closest to the Sun for the entire year. This afternoon the Moon skated past Mars, so tonight the Red Planet will appear above and right of the Moon.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EST, UT –5 hours). They may be different for your location.

Addendum

January Evening Star Chart

Star Chart for January 2023 evenings, based on 9 pm EST, January 15, 2023. Click on image to enlarge. Created using my LookingUp program.

January Morning Star Chart

Star Chart for January 2023 mornings, based on 6 am EST, January 15, 2023. Click on image to enlarge. Created using my LookingUp program.

Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). For a list of constellation names to go with the abbreviations, click here.

The planets are also plotted for the 15th. For a check on the current whereabouts of the five naked eye planets, see the Wednesday post most weeks.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris, the North Star.
The leaky bowl of the Big Dipper drips on Leo.
Follow the arc of the handle of the Big Dipper to the star Arcturus, then
Follow the spike to Spica.
QuadR on the star charts is the radiant of the Quadrantid meteor shower, which peaks on the 3rd, but is best seen in the early morning hours of the 3rd or 4th.

Twilight Limits, Nautical and Astronomical

			EST
	Morning	Twilight	Evening	Twilight	Dark	Night	Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2023-01-01	6h35m	7h11m	18h22m	18h57m	3h19m	6h35m	0.80
2023-01-02	6h35m	7h11m	18h23m	18h58m	4h28m	6h35m	0.88
2023-01-03	6h35m	7h11m	18h24m	18h59m	5h36m	6h35m	0.93
2023-01-04	6h35m	7h11m	18h24m	19h00m	–	–	0.97
2023-01-05	6h35m	7h11m	18h25m	19h01m	–	–	0.99
2023-01-06	6h35m	7h11m	18h26m	19h01m	–	–	1.00
2023-01-07	6h35m	7h11m	18h27m	19h02m	–	–	0.99
2023-01-08	6h35m	7h10m	18h28m	19h03m	–	–	0.96
2023-01-09	6h35m	7h10m	18h29m	19h04m	19h04m	19h56m	0.91
2023-01-10	6h35m	7h10m	18h30m	19h05m	19h05m	21h01m	0.85
2023-01-11	6h35m	7h10m	18h31m	19h06m	19h06m	22h06m	0.77
2023-01-12	6h35m	7h10m	18h32m	19h07m	19h07m	23h10m	0.69
2023-01-13	6h34m	7h09m	18h33m	19h08m	19h08m	–	0.59
2023-01-14	6h34m	7h09m	18h34m	19h09m	19h09m	0h16m	0.49
2023-01-15	6h34m	7h09m	18h35m	19h10m	19h10m	1h24m	0.38
2023-01-16	6h33m	7h08m	18h37m	19h11m	19h11m	2h36m	0.28
2023-01-17	6h33m	7h08m	18h38m	19h13m	19h13m	3h52m	0.18
2023-01-18	6h32m	7h07m	18h39m	19h14m	19h14m	5h11m	0.10
2023-01-19	6h32m	7h07m	18h40m	19h15m	19h15m	6h29m	0.04
2023-01-20	6h31m	7h06m	18h41m	19h16m	19h16m	6h31m	0.01
2023-01-21	6h31m	7h05m	18h42m	19h17m	19h17m	6h31m	0.00
2023-01-22	6h30m	7h05m	18h44m	19h18m	19h18m	6h30m	0.03
2023-01-23	6h30m	7h04m	18h45m	19h19m	20h05m	6h30m	0.08
2023-01-24	6h29m	7h03m	18h46m	19h20m	21h26m	6h29m	0.16
2023-01-25	6h28m	7h03m	18h47m	19h22m	22h43m	6h28m	0.25
2023-01-26	6h28m	7h02m	18h48m	19h23m	23h57m	6h28m	0.35
2023-01-27	6h27m	7h01m	18h50m	19h24m	–	6h27m	0.46
2023-01-28	6h26m	7h00m	18h51m	19h25m	1h09m	6h26m	0.56
2023-01-29	6h25m	6h59m	18h52m	19h26m	2h19m	6h25m	0.66
2023-01-30	6h24m	6h58m	18h53m	19h28m	3h28m	6h24m	0.75
2023-01-31	6h23m	6h58m	18h55m	19h29m	4h35m	6h23m	0.82

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

Date          Time    Event
Jan  1  Su            Venus: 17.3° E
     1  Su  10:25 am  Moon Ascending Node
     2  Mo   8:24 pm  Moon-Pleiades: 2.8° N
     3  Tu   2:35 pm  Moon-Mars:  0.6° N
     3  Tu  10:06 pm  Quadrantid shower: ZHR = 120
     4  We   2:59 pm  Perihelion:  0.9833 AU
     5  Th  10:08 pm  Moon North Dec.: 27.4° N
     6  Fr   6:08 pm  Full Wolf Moon
     7  Sa   7:53 am  Mercury Inferior Conj.
     7  Sa   8:40 am  Moon-Pollux: 2.1° N
     8  Su   4:19 am  Moon Apogee: 406,500 km
     8  Su  10:23 am  Moon-Beehive: 4° S
    14  Sa   9:10 pm  Last Quarter
    16  Mo   1:32 am  Moon Descending Node
    18  We   4:32 am  Moon-Antares: 2.1° S
    20  Fr  12:06 am  Moon South Dec.: 27.5° S
    21  Sa   3:53 pm  New Moon
    21  Sa   3:58 pm  Moon Perigee: 356,600 km
    22  Su   4:53 pm  Venus-Saturn:  0.3° N
    23  Mo   2:22 am  Moon-Saturn: 3.8° N
    23  Mo   3:20 am  Moon-Venus: 3.4° N
    25  We   9:00 pm  Moon-Jupiter: 1.8° N
    28  Sa  10:19 am  First Quarter
    28  Sa  11:05 am  Moon Ascending Node
    30  Mo  12:59 am  Mercury Elongation: 25° W
    30  Mo   2:21 am  Moon-Pleiades: 2.6° N
    30  Mo  11:24 pm  Moon-Mars:  0.1° N
Feb  1  We            Venus: 24.4° E

All event times are given for UTC-5 Eastern Standard Time.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

LU                  Ephemeris of Sky Events for Interlochen/TC
January, 2023    Local time zone: EST
+-----------------------------------------------------------------------+
| DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
|      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
+=======================================================================+
|Sun  1| 08:20a  05:12p  08:52 | 06:23p  07:09a |      Set  04:28a   79%|
|Mon  2| 08:20a  05:13p  08:53 | 06:24p  07:09a |      Set  05:36a   86%|
|Tue  3| 08:20a  05:14p  08:54 | 06:24p  07:09a |      Set  06:41a   92%|
|Wed  4| 08:20a  05:15p  08:55 | 06:25p  07:10a |      Set  07:41a   96%|
|Thu  5| 08:19a  05:16p  08:56 | 06:26p  07:10a |      Set  08:33a   99%|
|Fri  6| 08:19a  05:17p  08:57 | 06:27p  07:09a |Full  Rise 04:47p  100%|
|Sat  7| 08:19a  05:18p  08:59 | 06:28p  07:09a |      Rise 05:47p   99%|
+------+-----------------------+----------------+-----------------------+
|Sun  8| 08:19a  05:19p  09:00 | 06:29p  07:09a |      Rise 06:51p   96%|
|Mon  9| 08:19a  05:21p  09:01 | 06:30p  07:09a |      Rise 07:56p   92%|
|Tue 10| 08:18a  05:22p  09:03 | 06:31p  07:09a |      Rise 09:01p   86%|
|Wed 11| 08:18a  05:23p  09:04 | 06:32p  07:09a |      Rise 10:05p   79%|
|Thu 12| 08:18a  05:24p  09:06 | 06:33p  07:08a |      Rise 11:10p   70%|
|Fri 13| 08:17a  05:25p  09:08 | 06:34p  07:08a |      Rise 12:16a   61%|
|Sat 14| 08:17a  05:26p  09:09 | 06:35p  07:08a |L Qtr Rise 01:24a   51%|
+------+-----------------------+----------------+-----------------------+
|Sun 15| 08:16a  05:28p  09:11 | 06:36p  07:07a |      Rise 02:36a   41%|
|Mon 16| 08:16a  05:29p  09:13 | 06:38p  07:07a |      Rise 03:52a   30%|
|Tue 17| 08:15a  05:30p  09:15 | 06:39p  07:07a |      Rise 05:11a   21%|
|Wed 18| 08:14a  05:32p  09:17 | 06:40p  07:06a |      Rise 06:28a   12%|
|Thu 19| 08:14a  05:33p  09:19 | 06:41p  07:06a |      Rise 07:38a    5%|
|Fri 20| 08:13a  05:34p  09:21 | 06:42p  07:05a |      Rise 08:34a    1%|
|Sat 21| 08:12a  05:35p  09:23 | 06:43p  07:04a |New   Set  05:13p    0%|
+------+-----------------------+----------------+-----------------------+
|Sun 22| 08:11a  05:37p  09:25 | 06:45p  07:04a |      Set  06:40p    2%|
|Mon 23| 08:11a  05:38p  09:27 | 06:46p  07:03a |      Set  08:05p    7%|
|Tue 24| 08:10a  05:40p  09:29 | 06:47p  07:02a |      Set  09:26p   14%|
|Wed 25| 08:09a  05:41p  09:32 | 06:48p  07:02a |      Set  10:42p   23%|
|Thu 26| 08:08a  05:42p  09:34 | 06:49p  07:01a |      Set  11:56p   33%|
|Fri 27| 08:07a  05:44p  09:36 | 06:51p  07:00a |      Set  01:08a   43%|
|Sat 28| 08:06a  05:45p  09:39 | 06:52p  06:59a |F Qtr Set  02:18a   54%|
+------+-----------------------+----------------+-----------------------+
|Sun 29| 08:05a  05:47p  09:41 | 06:53p  06:58a |      Set  03:28a   64%|
|Mon 30| 08:04a  05:48p  09:44 | 06:54p  06:57a |      Set  04:34a   73%|
|Tue 31| 08:03a  05:49p  09:46 | 06:56p  06:56a |      Set  05:36a   81%|
+-----------------------------------------------------------------------+
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunrise and sunset

Generated using my LookingUp for DOS program.

Categories: Ephemeris Program, Month preview Tags: January 2023

12/01/2022 – Ephemeris – Let’s preview December skies

December 1, 2022 bobmoler Comments off

This is Ephemeris for Thursday, December 1st. Today the Sun will be up for 9 hours and 3 minutes, setting at 5:03, and it will rise tomorrow at 8:01. The Moon, 1 day past first quarter, will set at 1:57 tomorrow morning.

Let’s preview December’s skies. Winter will officially arrive on the 21st at 4:48 p.m., the winter solstice. The noontime Sun will dip from 23 ½ degrees to a bit less than 22 degrees above the southern horizon on that day. There will be little movement in the sunset times: In the Traverse City/Interlochen area this will be from 5:03 today, down to 5:02 and then advancing to 5:11 at the end of the month. The sunrise times will advance from 7:59 today to 8:20 on the 31st. The Moon will pass in front of Mars on the 7th, the night of the full moon and Mars opposition. The Geminid meteor shower whose maximum is on the morning of the 14th will have interference from the last quarter Moon.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EST, UT –5 hours). They may be different for your location.

Addendum

December Evening Star Chart

Star Chart for December 2022 (9 p.m. EST December 15, 2022). Click on image to enlarge. Created using my LookingUp program. Click on image to enlarge.
Credit my LookingUp program.

The planets and stars are plotted for the 15th at 9 pm EST in the evening and 6 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT).

December Morning Star Chart

Star Chart for December mornings, 2022 (6 a.m. EST December 15, 2022). Click on image to enlarge. Created using my LookingUp program.

For a list of constellation names to go with the abbreviations, click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris, the North Star.
The leaky bowl of the Big Dipper drips on Leo.
Follow the arc of the handle of the Big Dipper to the star Arcturus, then
Follow the spike to Spica.
The Summer Triangle is in red.
GemR on the star charts is the radiant of the Geminid meteor shower, which peaks on the morning of the 14th.

Twilight Limits, Nautical and Astronomical

			EST
	Morning	Twilight	Evening	Twilight	Dark	Night	Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2022-12-01	6h20m	6h56m	18h16m	18h51m	0h44m	6h20m	0.67
2022-12-02	6h21m	6h57m	18h16m	18h51m	1h57m	6h21m	0.77
2022-12-03	6h22m	6h57m	18h16m	18h51m	3h08m	6h22m	0.85
2022-12-04	6h23m	6h58m	18h15m	18h51m	4h18m	6h23m	0.92
2022-12-05	6h24m	6h59m	18h15m	18h50m	5h27m	6h24m	0.96
2022-12-06	6h25m	7h00m	18h15m	18h50m	–	–	0.99
2022-12-07	6h26m	7h01m	18h15m	18h50m	–	–	1
2022-12-08	6h27m	7h02m	18h15m	18h50m	–	–	0.99
2022-12-09	6h28m	7h03m	18h15m	18h51m	–	–	0.96
2022-12-10	6h28m	7h04m	18h15m	18h51m	18h51m	18h55m	0.92
2022-12-11	6h29m	7h05m	18h15m	18h51m	18h51m	19h56m	0.86
2022-12-12	6h30m	7h05m	18h16m	18h51m	18h51m	21h01m	0.79
2022-12-13	6h31m	7h06m	18h16m	18h51m	18h51m	22h06m	0.71
2022-12-14	6h31m	7h07m	18h16m	18h51m	18h51m	23h11m	0.62
2022-12-15	6h32m	7h07m	18h16m	18h52m	18h52m	–	0.52
2022-12-16	6h33m	7h08m	18h16m	18h52m	18h52m	0h16m	0.42
2022-12-17	6h33m	7h09m	18h17m	18h52m	18h52m	1h22m	0.32
2022-12-18	6h30m	7h05m	18h13m	18h49m	18h49m	2h31m	0.22
2022-12-19	6h31m	7h06m	18h14m	18h49m	18h49m	3h43m	0.14
2022-12-20	6h31m	7h07m	18h14m	18h50m	18h50m	5h00m	0.07
2022-12-21	6h32m	7h07m	18h15m	18h50m	18h50m	6h20m	0.02
2022-12-22	6h32m	7h08m	18h15m	18h51m	18h51m	6h32m	0
2022-12-23	6h33m	7h08m	18h16m	18h51m	18h51m	6h33m	0.01
2022-12-24	6h33m	7h08m	18h16m	18h52m	18h52m	6h33m	0.05
2022-12-25	6h33m	7h09m	18h17m	18h52m	19h48m	6h33m	0.11
2022-12-26	6h34m	7h09m	18h17m	18h53m	21h11m	6h34m	0.2
2022-12-27	6h34m	7h10m	18h18m	18h54m	22h31m	6h34m	0.3
2022-12-28	6h34m	7h10m	18h19m	18h54m	23h47m	6h34m	0.41
2022-12-29	6h35m	7h10m	18h20m	18h55m	–	6h35m	0.52
2022-12-30	6h35m	7h10m	18h20m	18h56m	0h59m	6h35m	0.62
2022-12-31	6h35m	7h10m	18h21m	18h56m	2h10m	6h35m	0.72

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

     Date     Time    Event
Dec  1  Th            Venus: 9.9° E
     1  Th   7:52 pm  Moon-Jupiter: 2.6° N
     5  Mo   7:38 am  Moon Ascending Node
     6  Tu   2:26 pm  Moon-Pleiades: 2.9° N
     7  We  11:08 pm  Full Cold Moon
     7  We  11:21 pm  Moon-Mars: 0.6° S, Occultation!
     7  We  11:24 pm  Mars Opposition
     9  Fr   4:22 pm  Moon North Dec.: 27.4° N
    11  Su   2:06 am  Moon-Pollux: 2° N
    11  Su   7:30 pm  Moon Apogee: 405900 km
    14  We   7:53 am  Geminid Shower: ZHR = 120
    16  Fr   3:56 am  Last Quarter
    19  Mo   8:36 pm  Moon Descending Node
    21  We   9:59 am  Mercury Elongation: 20.1° E
    21  We   4:48 pm  Winter Solstice
    21  We   5:43 pm  Moon-Antares: 2.3° S
    22  Th   4:00 pm  Ursid Shower: ZHR = 10
    23  Fr   5:17 am  New Moon
    23  Fr   1:18 pm  Moon South Dec.: 27.4° S
    24  Sa   3:32 am  Moon Perigee: 358300 km
    24  Sa   6:29 am  Moon-Venus: 3.4° N
    26  Mo  11:11 am  Moon-Saturn: 4° N
    29  Th   2:13 am  Mercury-Venus: 1.4° N
    29  Th   5:29 am  Moon-Jupiter: 2.4° N
    29  Th   8:20 pm  First Quarter

All event times are given for UTC-5 Eastern Standard Time.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site, you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

     LU                  Ephemeris of Sky Events for Interlochen/TC
December, 2022    Local time zone: EST
+-----------------------------------------------------------------------+
| DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
|      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
+=======================================================================+
|Thu  1| 07:59a  05:03p  09:03 | 06:12p  06:50a |      Set  01:57a   65%|
|Fri  2| 08:01a  05:03p  09:02 | 06:12p  06:51a |      Set  03:07a   75%|
|Sat  3| 08:02a  05:02p  09:00 | 06:12p  06:52a |      Set  04:17a   83%|
+------+-----------------------+----------------+-----------------------+
|Sun  4| 08:03a  05:02p  08:59 | 06:12p  06:53a |      Set  05:27a   90%|
|Mon  5| 08:04a  05:02p  08:58 | 06:12p  06:54a |      Set  06:36a   95%|
|Tue  6| 08:05a  05:02p  08:57 | 06:12p  06:55a |      Set  07:45a   99%|
|Wed  7| 08:06a  05:02p  08:55 | 06:12p  06:56a |Full  Rise 04:31p  100%|
|Thu  8| 08:07a  05:02p  08:54 | 06:12p  06:57a |      Rise 05:10p   99%|
|Fri  9| 08:08a  05:02p  08:53 | 06:12p  06:58a |      Rise 05:59p   97%|
|Sat 10| 08:09a  05:02p  08:52 | 06:12p  06:58a |      Rise 06:54p   93%|
+------+-----------------------+----------------+-----------------------+
|Sun 11| 08:10a  05:02p  08:52 | 06:12p  06:59a |      Rise 07:56p   87%|
|Mon 12| 08:10a  05:02p  08:51 | 06:12p  07:00a |      Rise 09:00p   80%|
|Tue 13| 08:11a  05:02p  08:50 | 06:12p  07:01a |      Rise 10:05p   72%|
|Wed 14| 08:12a  05:02p  08:50 | 06:13p  07:01a |      Rise 11:10p   63%|
|Thu 15| 08:13a  05:02p  08:49 | 06:13p  07:02a |      Rise 12:16a   54%|
|Fri 16| 08:13a  05:03p  08:49 | 06:13p  07:03a |L Qtr Rise 01:22a   44%|
|Sat 17| 08:14a  05:03p  08:48 | 06:14p  07:03a |      Rise 02:31a   34%|
+------+-----------------------+----------------+-----------------------+
|Sun 18| 08:15a  05:03p  08:48 | 06:14p  07:04a |      Rise 03:43a   24%|
|Mon 19| 08:15a  05:04p  08:48 | 06:14p  07:05a |      Rise 04:59a   16%|
|Tue 20| 08:16a  05:04p  08:48 | 06:15p  07:05a |      Rise 06:20a    8%|
|Wed 21| 08:16a  05:05p  08:48 | 06:15p  07:06a |      Rise 07:41a    3%|
|Thu 22| 08:17a  05:05p  08:48 | 06:16p  07:06a |      Rise 08:56a    0%|
|Fri 23| 08:17a  05:06p  08:48 | 06:16p  07:07a |New   Set  05:08p    1%|
|Sat 24| 08:18a  05:06p  08:48 | 06:17p  07:07a |      Set  06:24p    4%|
+------+-----------------------+----------------+-----------------------+
|Sun 25| 08:18a  05:07p  08:48 | 06:18p  07:08a |      Set  07:47p   10%|
|Mon 26| 08:19a  05:08p  08:49 | 06:18p  07:08a |      Set  09:10p   18%|
|Tue 27| 08:19a  05:08p  08:49 | 06:19p  07:08a |      Set  10:30p   28%|
|Wed 28| 08:19a  05:09p  08:49 | 06:20p  07:09a |      Set  11:46p   39%|
|Thu 29| 08:19a  05:10p  08:50 | 06:20p  07:09a |F Qtr Set  12:59a   49%|
|Fri 30| 08:19a  05:11p  08:51 | 06:21p  07:09a |      Set  02:09a   60%|
|Sat 31| 08:20a  05:11p  08:51 | 06:22p  07:09a |      Set  03:19a   70%|
+-----------------------------------------------------------------------+
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunrise and sunset

Generated using my LookingUp for DOS program.

Mars occultation by the Moon, the night of December 7/8, 2022

Occultation of Mars map. The occultation of Mars by the Moon will be visible from within the bounded area. For Traverse City, MI Mars will disappear around 10:15 pm, December 7, 2022 and reappear around 11:15 pm. I’ll have more on it next week. Credit: Occult v4 app.

Categories: Ephemeris Program, Month preview Tags: December 2022, Occultation of Mars

11/01/2022 – Ephemeris – Previewing November skies

November 1, 2022 bobmoler Comments off

This is Bob Moler with Ephemeris for Tuesday, November 1st. The Sun will rise at 8:20. It’ll be up for 10 hours and 10 minutes, setting at 6:31. The Moon, at first quarter today, will set at 1:21 tomorrow morning.

Let’s look ahead at the skies for the month of November. The Sun is still moving south rapidly. Daylight hours in the Interlochen/Traverse City area and will drop from 10 hours and 10 minutes today to 9 hours 5 minutes on the 30th. The altitude, or angle, of the Sun above the southern horizon at local noon will be at 30 degrees today and will descend to 23 and a half degrees on the 30th. The altitude of the Sun in the Straits area will be a degree lower. Local noon, this month, will be about 12:30 p.m. once we’re on standard time beginning on the 6th. There will be a total eclipse of the Moon on the morning of the 8th, Election Day. The eclipse will start shortly after 4 am and be visible until it sets during the last stages of the eclipse just after sunrise, around 7:40 am. I’ll have more information on it next Monday.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EDT, UT – 4 hours). They may be different for your location.

Addendum

November Evening Star Chart

The planets and stars are plotted for the 15th at 9 p.m. EST in the evening and 6 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 45 minutes earlier than the current time.

Star Chart November Morning — Star Chart for November mornings, 2022 (6 a.m. EST November 15, 2022). Click on the image to enlarge it. Created using my LookingUp program.

For a list of constellation names to go with the abbreviations, click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris, the North Star.
Follow the arc of the handle of the Big Dipper to the star Arcturus
The Summer Triangle is in red.
TauR on the evening star chart can be used as the radiant for the North and South Taurid meteor showers.
LeoR on the morning star chart is the radiant of the Leonid meteor shower, which peaks between the 17th.

Twilight Limits, Nautical and Astronomical

			EDT/EST
	Morning	Twilight	Evening	Twilight	Dark	Night	Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2022-11-01	6h47m	7h21m	19h40m	20h13m	0h03m	6h47m	0.61
2022-11-02	6h48m	7h22m	19h38m	20h12m	1h21m	6h48m	0.71
2022-11-03	6h49m	7h23m	19h37m	20h11m	2h39m	6h49m	0.81
2022-11-04	6h51m	7h25m	19h36m	20h10m	3h54m	6h51m	0.89
2022-11-05	6h52m	7h26m	19h35m	20h09m	5h07m	6h52m	0.94
2022-11-06	5h53m	6h27m	18h34m	19h08m	5h18m	5h53m	0.98
2022-11-07	5h54m	6h28m	18h32m	19h06m	–	–	1
2022-11-08	5h55m	6h29m	18h31m	19h05m	–	–	0.99
2022-11-09	5h57m	6h31m	18h30m	19h04m	–	–	0.97
2022-11-10	5h58m	6h32m	18h29m	19h03m	–	–	0.93
2022-11-11	5h59m	6h33m	18h28m	19h03m	19h03m	19h16m	0.87
2022-11-12	6h00m	6h34m	18h27m	19h02m	19h02m	20h07m	0.8
2022-11-13	6h01m	6h35m	18h26m	19h01m	19h01m	21h05m	0.72
2022-11-14	6h02m	6h37m	18h26m	19h00m	19h00m	22h08m	0.63
2022-11-15	6h03m	6h38m	18h25m	18h59m	18h59m	23h13m	0.54
2022-11-16	6h05m	6h39m	18h24m	18h58m	18h58m	–	0.44
2022-11-17	6h06m	6h40m	18h23m	18h58m	18h58m	0h19m	0.34
2022-11-18	6h07m	6h41m	18h22m	18h57m	18h57m	1h26m	0.25
2022-11-19	6h08m	6h43m	18h22m	18h56m	18h56m	2h33m	0.17
2022-11-20	6h09m	6h44m	18h21m	18h56m	18h56m	3h42m	0.1
2022-11-21	6h10m	6h45m	18h20m	18h55m	18h55m	4h54m	0.04
2022-11-22	6h11m	6h46m	18h20m	18h54m	18h54m	6h10m	0.01
2022-11-23	6h12m	6h47m	18h19m	18h54m	18h54m	6h12m	0
2022-11-24	6h13m	6h48m	18h19m	18h53m	18h53m	6h13m	0.02
2022-11-25	6h14m	6h49m	18h18m	18h53m	18h53m	6h14m	0.07
2022-11-26	6h15m	6h50m	18h18m	18h53m	19h32m	6h15m	0.14
2022-11-27	6h16m	6h51m	18h17m	18h52m	20h49m	6h16m	0.24
2022-11-28	6h17m	6h52m	18h17m	18h52m	22h09m	6h17m	0.34
2022-11-29	6h18m	6h53m	18h17m	18h52m	23h29m	6h18m	0.45
2022-11-30	6h19m	6h55m	18h16m	18h51m	–	6h19m	0.57

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

Nov  1  Tu            Venus: 2.6° E
     1  Tu   1:37 am  First Quarter
     1  Tu   4:08 pm  Moon-Saturn: 4.3° N
     4  Fr   3:19 pm  Moon-Jupiter: 2.5° N
     8  Tu   1:08 am  Moon Ascending Node
     8  Tu   5:59 am  Total Lunar Eclipse
     8  Tu   6:02 am  Full Beaver Moon
     8  Tu  11:28 am  Mercury Superior Conj.
     9  We   3:41 am  Uranus Opposition
     9  We   7:16 am  Moon-Pleiades: 2.9° N
    11  Fr   8:43 am  Moon-Mars: 2.7° S
    12  Sa   9:17 am  Moon North Dec.: 27.5° N
    12  Sa  12:25 pm  North Taurid Shower: ZHR = 15
    13  Su   6:43 pm  Moon-Pollux: 1.9° N
    14  Mo   1:41 am  Moon Apogee: 404900 km
    16  We   8:27 am  Last Quarter
    17  Th   6:42 pm  Leonid Shower: ZHR = 15
    22  Tu  11:23 am  Moon Descending Node
    23  We   5:57 pm  New Moon
    25  Fr   8:30 pm  Moon Perigee: 362800 km
    26  Sa   3:28 am  Moon South Dec.: 27.5° S
    28  Mo  11:40 pm  Moon-Saturn: 4.2° N
    30  We   9:36 am  First Quarter
Dec  1  Th            Venus: 9.9° E

All event times for November 1-5 are given for UTC-4 Eastern Daylight Saving Time. For dates after that, times are given for UTC-5 Eastern Standard Time.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site, you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Times

LU               Ephemeris of Sky Events for Interlochen/TC
November, 2022    Local time zone: EDT
+-----------------------------------------------------------------------+
| DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
|      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
+=======================================================================+
|Tue  1| 08:20a  06:31p  10:10 | 07:36p  07:15a |F Qtr Set  01:21a   58%|
|Wed  2| 08:22a  06:29p  10:07 | 07:35p  07:17a |      Set  02:38a   69%|
|Thu  3| 08:23a  06:28p  10:05 | 07:33p  07:18a |      Set  03:53a   79%|
|Fri  4| 08:24a  06:27p  10:02 | 07:32p  07:19a |      Set  05:06a   87%|
|Sat  5| 08:26a  06:26p  09:59 | 07:31p  07:20a |      Set  06:18a   93%|
+------+-----------------------+----------------+-----------------------+
| EST  |      Time Change      |                |                       |
|Sun  6| 07:27a  05:24p  09:57 | 06:30p  06:21a |      Set  06:29a   98%|
|Mon  7| 07:29a  05:23p  09:54 | 06:29p  06:23a |      Set  07:40a  100%|
|Tue  8| 07:30a  05:22p  09:51 | 06:28p  06:24a |Full  Rise 05:28p  100%|
|Wed  9| 07:31a  05:21p  09:49 | 06:27p  06:25a |      Rise 05:57p   98%|
|Thu 10| 07:33a  05:19p  09:46 | 06:26p  06:26a |      Rise 06:32p   94%|
|Fri 11| 07:34a  05:18p  09:44 | 06:25p  06:28a |      Rise 07:15p   88%|
|Sat 12| 07:35a  05:17p  09:41 | 06:24p  06:29a |      Rise 08:06p   81%|
+------+-----------------------+----------------+-----------------------+
|Sun 13| 07:37a  05:16p  09:39 | 06:23p  06:30a |      Rise 09:05p   73%|
|Mon 14| 07:38a  05:15p  09:37 | 06:22p  06:31a |      Rise 10:07p   65%|
|Tue 15| 07:39a  05:14p  09:34 | 06:21p  06:32a |      Rise 11:13p   55%|
|Wed 16| 07:41a  05:13p  09:32 | 06:20p  06:33a |L Qtr Rise 12:19a   46%|
|Thu 17| 07:42a  05:12p  09:30 | 06:20p  06:35a |      Rise 01:25a   36%|
|Fri 18| 07:43a  05:11p  09:27 | 06:19p  06:36a |      Rise 02:32a   27%|
|Sat 19| 07:45a  05:10p  09:25 | 06:18p  06:37a |      Rise 03:42a   18%|
+------+-----------------------+----------------+-----------------------+
|Sun 20| 07:46a  05:10p  09:23 | 06:17p  06:38a |      Rise 04:54a   11%|
|Mon 21| 07:47a  05:09p  09:21 | 06:17p  06:39a |      Rise 06:10a    5%|
|Tue 22| 07:49a  05:08p  09:19 | 06:16p  06:40a |      Rise 07:30a    1%|
|Wed 23| 07:50a  05:07p  09:17 | 06:16p  06:42a |New   Set  04:50p    0%|
|Thu 24| 07:51a  05:07p  09:15 | 06:15p  06:43a |      Set  05:31p    2%|
|Fri 25| 07:52a  05:06p  09:13 | 06:15p  06:44a |      Set  06:24p    6%|
|Sat 26| 07:54a  05:05p  09:11 | 06:14p  06:45a |      Set  07:31p   13%|
+------+-----------------------+----------------+-----------------------+
|Sun 27| 07:55a  05:05p  09:10 | 06:14p  06:46a |      Set  08:48p   22%|
|Mon 28| 07:56a  05:04p  09:08 | 06:13p  06:47a |      Set  10:09p   32%|
|Tue 29| 07:57a  05:04p  09:06 | 06:13p  06:48a |      Set  11:28p   43%|
|Wed 30| 07:58a  05:04p  09:05 | 06:13p  06:49a |F Qtr Set  12:44a   54%|
+-----------------------------------------------------------------------+
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunrise and sunset

Generated using my LookingUp for DOS program.

Categories: Ephemeris Program, Month preview Tags: November Preview

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Addendum

October Evening Star Chart

October Morning Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Addendum

September Evening Star Chart

September Morning Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Addendum

August Evening Star Chart

August Morning Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Addendum

July Evening Star Chart

July Morning Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

NASA Calendar of Planetary Events

Addendum

June Evening Star Chart

June Morning Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Addendum

May Evening Star Chart

May Morning Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

Addendum

February Evening Star Chart

February Morning Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Addendum

January Evening Star Chart

January Morning Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Addendum

December Evening Star Chart

December Morning Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Mars occultation by the Moon, the night of December 7/8, 2022

Addendum

November Evening Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Times

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