02/01/2022 – Ephemeris – Let’s look ahead at our short month of February
This is Bob Moler with Ephemeris for Tuesday, February 1st. Today the Sun will be up for 9 hours and 49 minutes, setting at 5:51, and it will rise tomorrow at 8:00. The Moon is new today, and won’t be visible.
Let’s look ahead at our short month of February. We’re in the depths of winter, but the Sun is continuing its return to northern climes. This is reflected in the increase in daylight hours, from 9 hours 49 minutes today to 11 hours 7 minutes on the 28th. These times are for the Interlochen/Traverse City area. The duration of daylight is slightly shorter in the northern part of our listening area and slightly longer to the south. As the month goes on, the weather should generally warm and clear up. We will be slowly losing Jupiter from the evening sky this month. Venus is moving away from the Sun and will pass Mars in the morning sky on the 12th. Neither Mercury nor Saturn will be visible this month because they will be lost in the Sun’s glare.
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
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
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. |
| 2022-02-01 | 6h22m | 6h56m | 18h56m | 19h30m | 19h30m | 6h22m | 0.01 |
| 2022-02-02 | 6h21m | 6h55m | 18h57m | 19h31m | 19h43m | 6h21m | 0.05 |
| 2022-02-03 | 6h20m | 6h54m | 18h59m | 19h33m | 20h57m | 6h20m | 0.11 |
| 2022-02-04 | 6h19m | 6h53m | 19h00m | 19h34m | 22h08m | 6h19m | 0.19 |
| 2022-02-05 | 6h18m | 6h52m | 19h01m | 19h35m | 23h17m | 6h18m | 0.28 |
| 2022-02-06 | 6h17m | 6h51m | 19h02m | 19h36m | – | 6h17m | 0.37 |
| 2022-02-07 | 6h16m | 6h50m | 19h04m | 19h38m | 0h23m | 6h16m | 0.47 |
| 2022-02-08 | 6h15m | 6h49m | 19h05m | 19h39m | 1h29m | 6h15m | 0.56 |
| 2022-02-09 | 6h13m | 6h47m | 19h06m | 19h40m | 2h34m | 6h13m | 0.65 |
| 2022-02-10 | 6h12m | 6h46m | 19h08m | 19h41m | 3h38m | 6h12m | 0.74 |
| 2022-02-11 | 6h11m | 6h45m | 19h09m | 19h43m | 4h39m | 6h11m | 0.82 |
| 2022-02-12 | 6h10m | 6h43m | 19h10m | 19h44m | 5h35m | 6h10m | 0.89 |
| 2022-02-13 | 6h08m | 6h42m | 19h11m | 19h45m | – | – | 0.94 |
| 2022-02-14 | 6h07m | 6h41m | 19h13m | 19h47m | – | – | 0.98 |
| 2022-02-15 | 6h06m | 6h39m | 19h14m | 19h48m | – | – | 1 |
| 2022-02-16 | 6h04m | 6h38m | 19h15m | 19h49m | – | – | 1 |
| 2022-02-17 | 6h03m | 6h37m | 19h17m | 19h50m | – | – | 0.98 |
| 2022-02-18 | 6h01m | 6h35m | 19h18m | 19h52m | 19h52m | 20h32m | 0.93 |
| 2022-02-19 | 6h00m | 6h34m | 19h19m | 19h53m | 19h53m | 21h43m | 0.87 |
| 2022-02-20 | 5h58m | 6h32m | 19h20m | 19h54m | 19h54m | 22h55m | 0.79 |
| 2022-02-21 | 5h57m | 6h31m | 19h22m | 19h55m | 19h55m | – | 0.69 |
| 2022-02-22 | 5h55m | 6h29m | 19h23m | 19h57m | 19h57m | 0h10m | 0.58 |
| 2022-02-23 | 5h54m | 6h28m | 19h24m | 19h58m | 19h58m | 1h26m | 0.47 |
| 2022-02-24 | 5h52m | 6h26m | 19h26m | 19h59m | 19h59m | 2h43m | 0.36 |
| 2022-02-25 | 5h51m | 6h24m | 19h27m | 20h01m | 20h01m | 3h58m | 0.25 |
| 2022-02-26 | 5h49m | 6h23m | 19h28m | 20h02m | 20h02m | 5h04m | 0.16 |
| 2022-02-27 | 5h47m | 6h21m | 19h30m | 20h03m | 20h03m | 5h47m | 0.08 |
| 2022-02-28 | 5h46m | 6h19m | 19h31m | 20h05m | 20h05m | 5h46m | 0.03 |
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
Date Time Event
Feb 1 Tu Venus: 32° W
1 Tu 12:46 am New Moon
2 We 4:08 pm Moon-Jupiter: 4.4° N
4 Fr 1:34 pm Saturn Solar Conjunction
8 Tu 8:50 am First Quarter
9 We 1:12 am Moon Ascending Node
10 Th 9:39 pm Moon Apogee: 404,900 km
12 Sa 11:45 am Moon North Dec.: 26.4° N
12 Sa 8:00 pm Venus-Mars: 6.6° N
13 Su 5:52 pm Moon-Pollux: 2.8° N
13 Su Venus greatest brilliancy
14 Mo 6:42 pm Moon-Beehive: 3.5° S
16 We 11:57 am Full Snow Moon
16 We 3:59 pm Mercury Elongation: 26.3° West
23 We 1:54 am Moon Descending Node
23 We 5:32 pm Last Quarter
26 Sa 1:37 am Moon South Dec.: 26.6° S
26 Sa 5:18 pm Moon Perigee: 367,800 km
27 Su 4:00 am Moon-Mars: 3.5° N
28 Mo 3:07 pm Moon-Mercury: 3.8° N
28 Mo 6:47 pm Moon-Saturn: 4.3° N
Mar 1 Tu Venus: 45° W
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, 2022 Local time zone: EST +-----------------------------------------------------------------------+ | DATE | SUN SUN DAYLIGHT| TWILIGHT* |MOON RISE OR ILLUM | | | RISE SET HOURS | END START |PHASE SET** TIME FRACTN| +=======================================================================+ |Tue 1| 08:01a 05:51p 09:49 | 06:57p 06:55a |New Set 06:23p 1%| |Wed 2| 08:00a 05:52p 09:52 | 06:58p 06:54a | Set 07:42p 4%| |Thu 3| 07:59a 05:54p 09:54 | 07:00p 06:53a | Set 08:57p 10%| |Fri 4| 07:58a 05:55p 09:57 | 07:01p 06:52a | Set 10:08p 17%| |Sat 5| 07:56a 05:57p 10:00 | 07:02p 06:51a | Set 11:16p 26%| +------+-----------------------+----------------+-----------------------+ |Sun 6| 07:55a 05:58p 10:03 | 07:04p 06:50a | Set 12:23a 35%| |Mon 7| 07:54a 06:00p 10:05 | 07:05p 06:49a | Set 01:29a 44%| |Tue 8| 07:53a 06:01p 10:08 | 07:06p 06:48a |F Qtr Set 02:34a 54%| |Wed 9| 07:51a 06:02p 10:11 | 07:07p 06:46a | Set 03:37a 63%| |Thu 10| 07:50a 06:04p 10:14 | 07:09p 06:45a | Set 04:38a 72%| |Fri 11| 07:48a 06:05p 10:16 | 07:10p 06:44a | Set 05:34a 80%| |Sat 12| 07:47a 06:07p 10:19 | 07:11p 06:42a | Set 06:24a 87%| +------+-----------------------+----------------+-----------------------+ |Sun 13| 07:46a 06:08p 10:22 | 07:13p 06:41a | Set 07:05a 93%| |Mon 14| 07:44a 06:10p 10:25 | 07:14p 06:40a | Set 07:40a 97%| |Tue 15| 07:43a 06:11p 10:28 | 07:15p 06:38a | Set 08:09a 99%| |Wed 16| 07:41a 06:12p 10:31 | 07:16p 06:37a |Full Rise 06:11p 100%| |Thu 17| 07:39a 06:14p 10:34 | 07:18p 06:36a | Rise 07:21p 98%| |Fri 18| 07:38a 06:15p 10:37 | 07:19p 06:34a | Rise 08:32p 94%| |Sat 19| 07:36a 06:17p 10:40 | 07:20p 06:33a | Rise 09:42p 88%| +------+-----------------------+----------------+-----------------------+ |Sun 20| 07:35a 06:18p 10:43 | 07:22p 06:31a | Rise 10:55p 81%| |Mon 21| 07:33a 06:19p 10:46 | 07:23p 06:30a | Rise 12:09a 71%| |Tue 22| 07:32a 06:21p 10:49 | 07:24p 06:28a | Rise 01:26a 61%| |Wed 23| 07:30a 06:22p 10:52 | 07:26p 06:26a |L Qtr Rise 02:43a 49%| |Thu 24| 07:28a 06:23p 10:55 | 07:27p 06:25a | Rise 03:57a 38%| |Fri 25| 07:27a 06:25p 10:58 | 07:28p 06:23a | Rise 05:04a 27%| |Sat 26| 07:25a 06:26p 11:01 | 07:29p 06:22a | Rise 05:59a 18%| +------+-----------------------+----------------+-----------------------+ |Sun 27| 07:23a 06:27p 11:04 | 07:31p 06:20a | Rise 06:43a 10%| |Mon 28| 07:21a 06:29p 11:07 | 07:32p 06:18a | Rise 07:17a 4%| +-----------------------------------------------------------------------+ * Nautical Twilight ** Moonrise or moonset, whichever occurs between sunrise and sunset
Created using my LookingUp for DOS output as HTML.
01/28/2022 – Ephemeris – Auriga the charioteer without a chariot
This is Ephemeris for Friday, January 28th. Today the Sun will be up for 9 hours and 39 minutes, setting at 5:45, and it will rise tomorrow at 8:05. The Moon, 3 days past last quarter, will rise at 6:10 tomorrow morning.
The constellation Auriga the charioteer is nearly overhead at 9 p.m. It is a pentagon of stars, with the brilliant star Capella at one of its upper corners. Capella represents a she-goat he’s carrying. A narrow triangle of stars nearby Capella represents her three kids. The chariot, or by some a wagon is not seen in the stars and is supposed to be pulled by four horses, abreast. Or four oxen, or two oxen, a horse, and a zebra. None of these are depicted in the stars. The only constellation art I’ve seen is a man holding a large goat and three baby goats. There’s no chariot, no wagon and definitely no horses, oxen or zebras. What I see is a distinctive pentagon of stars, with one, Capella, brighter than the rest, and a nearby small triangle of stars.
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

Auriga star field, constellation lines and art. Auriga seems to be missing a kid, he’s supposed to have three, I think. Created using Stellarium and GIMP.
I checked other constellation art, and it appears that there are only two kids. I may have been wrong all these years. Yet the asterism of The Kids has three stars.
01/27/2022 – Ephemeris – Looking at the constellation of Gemini the twins
This is Ephemeris for Thursday, January 27th. Today the Sun will be up for 9 hours and 37 minutes, setting at 5:44, and it will rise tomorrow at 8:06. The Moon, 2 days past last quarter, will rise at 4:56 tomorrow morning.
Another famous winter constellation is Gemini. The constellation of Gemini the Twins is visible high in the southeast, above and left of Orion the hunter, at 9 p.m. The namesake stars of the two lads, are the two bright stars at the left end of Gemini, and are high and nearly in the east. Castor is on top, while Pollux is below. From them come two lines of stars that outline the two, extending horizontally toward Orion. In Greek mythology the lads were half brothers, Castor was fathered by a mere mortal, while Pollux was fathered by Zeus, but were born together as twins. When Castor was killed during the quest for the Golden Fleece, Pollux pleaded with Zeus to let him die also, so Zeus placed them together in the sky.
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
01/26/2022 – Ephemeris – Evening planets? Then there was one.
This is Bob Moler with Ephemeris for Wednesday, January 26th. Today the Sun will be up for 9 hours and 35 minutes, setting at 5:43, and it will rise tomorrow at 8:07. The Moon, 1 day past last quarter, will rise at 3:37 tomorrow morning.
Let’s search for the naked-eye planets for this week. There is just one planet left in the evening sky now. Jupiter will be visible in the southwest by 6:15 pm. Jupiter will set at 8:12 pm. Saturn is too close to the Sun to be seen, and will cross behind the Sun in 9 days to enter the morning sky. In the morning sky, Venus, our brilliant morning star, and the much dimmer Mars will rise about the same time about 6:05 am. Both will appear low in the southeastern twilight by 7 am. Mars will be to the right of Venus by 11 and a half degrees, about the width of a fist held at arm’s length. Mars’ rival in color and brightness, the red giant star Antares, is to its right and a bit higher, and nearer the waning crescent 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

Waning crescent Moon as it might be seen at 7:15 am tomorrow morning, January 27, 2022. Created using Stellarium.

Telescopic views of the bright planets and their brighter moons (north up) as they would be seen in a small telescope, with the same magnification, overnight, January 26/27, 2022. I do not show planets less than 10 seconds of arc in diameter. Apparent diameters: Jupiter, 33.85″. Mars is not shown, its apparent diameter is 4.27″. Venus has an apparent diameter of 52.85″ and is 11.0% illuminated. The ” symbol means seconds of arc (1/3600th of a degree.) Created using Cartes du Ciel (Sky Charts).
01/25/2022 – Ephemeris -The James Webb Space Telescope is now in orbit of Lagrange point 2 (L2)
Note: This program was written and recorded prior to the thruster burn at 2 pm Monday, which nudged it into a halo orbit of the Earth-Sun L2 point. This post was posted after the burn.
This is Bob Moler with Ephemeris for Tuesday, January 25th. Today the Sun will be up for 9 hours and 32 minutes, setting at 5:41, and it will rise tomorrow at 8:08. The Moon, at last quarter today, will rise at 2:19 tomorrow morning.
On the James Webb Space Telescope, which should now be in a big lazy halo orbit of the Lagrangian L2, point nearly a million miles directly opposite the Sun from the Earth. Its final mid-course correction should have dropped into the halo orbit. I’m recording this Sunday night before the scheduled 2 pm yesterday mid-course correction firing. While I’m always sure it’ll be clear tonight to see the stars, or when an eclipse will happen. I’m not so sure on when or what will happen where spacecraft and rockets are involved. As far as knowing, that it will be clear tonight. I’m sure that someone will hear or read these comments, also published on my blog, and have clear skies somewhere on the planet.
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

James Webb Space Telescope trajectory to L2 with some milestones of deployment. “ISIM” stands for Integrated Scientific Instruments Module. Credit: Space Telescope Science Institute (STScI).

Lake effect clouds over Michigan. Taken earlier this month by NASA via SpaceRef.com. I live somewhere on the northwestern part of the Lower Peninsula under the lake effect clouds. We haven’t had much snow from it… Yet! But winter isn’t half over, and we can get big snow storms a month into spring. We exchange sub-zero (F) cold on the western edge of the lakes for slightly warmer temperatures, clouds and snow, until the lakes freeze, if they freeze.
01/24/2022 – Ephemeris – The Great Orion Nebula
This is Ephemeris for Monday, January 24th. Today the Sun will be up for 9 hours and 30 minutes, setting at 5:40, and it will rise tomorrow at 8:09. The Moon, 1 day before last quarter, will rise at 1:03 tomorrow morning.
The closest star nursery to us, places where stars are being born, is the Great Orion Nebula, 1,300 light years away. A light year is about 6 trillion miles, if you want to pace it out. It’s located in the constellation Orion’s sword that hangs below his belt. In as little as a pair of binoculars, it shines by emission and reflection of the light of a tiny clutch of four stars at its heart, which astronomers have called the Trapezium. These extremely hot young massive stars are not destined to live long. Unlike the Sun’s 10 billion year lifetime, these stars lifespans will be measured in millions of years. Yet do not mourn for them, even now stars are forming within their dusty cocoons in the nebula. The Trapezium stars’ deaths will provide heavy elements for new stars and planets.
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

The Great Orion Nebula (M42) long exposure photograph by Scott Anttila. Includes all the sword stars.

The inner and brightest part of the Great Orion Nebula. Also, visible are the four stars of the Trapezium, whose ultraviolet emissions light up the nebula. This is pretty much one’s perception of the nebula as seen in a small telescope, except it would appear colorless. In larger telescopes, one would perceive a greenish color. The red color of hydrogen is outside our night adapted visual range. The green emission is due to mainly doubly ionized oxygen and the green emission of hydrogen. Image by Scott Anttila.
01/21/22 – Ephemeris – A river in the sky, but not the Milky Way
This is Ephemeris for Friday, January 21st. Today the Sun will be up for 9 hours and 23 minutes, setting at 5:36, and it will rise tomorrow at 8:11. The Moon, halfway from full to last quarter, will rise at 9:31 this evening.
One of the more obscure constellations around is Eridanus, which depicts a river. The river starts near the lower right corner of Orion, near the bright star Rigel and flows to the right then down near the southwestern horizon, then it meanders along the horizon to the south before turning below the horizon. One has to travel to the far south to see the southern terminus of the river, the bright star Achernar. Writers over the ages have seen here the Nile and the Earth circling river Ocean of the flat earth days. Achernar is actually two stars. And the brightest was discovered to be the flattest star known, due to its rapid spin. The dimensions of Achernar A has been determined to be twice as wide across its equator than from pole to pole. It’s 139 light years away.
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
01/20/2022 – Ephemeris – Taurus and the half sisters of the Pleiades
This is Bob Moler with Ephemeris for Thursday, January 20th. Today the Sun will be up for 9 hours and 21 minutes, setting at 5:34, and it will rise tomorrow at 8:12. The Moon, 3 days past full, will rise at 8:23 this evening.
High in the south-southeastern sky, and above-right of Orion, is the bright star Aldebaran. It’s at one tip of a letter V of fainter stars. The group of stars is the face of the constellation of Taurus the bull. Aldebaran is the angry bloodshot eye of the bull that’s charging Orion, whose defending himself with a lion skin shield and an upraised club. The stars in the V, and many more visible in binoculars, except for Aldebaran, belong to a star cluster called the Hyades. In Greek mythology, these are the half sisters of the Pleiades, visible as a tight group of stars above them. The V of stars is actually an upside down letter A, or Aleph, the first letter of the Hebrew and Mesopotamian alphabets. This was invented when Taurus, not Aries, was host to the Sun at the spring equinox.
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
01/19/2022 – Ephemeris – Let’s search for the naked-eye planets for this week
This is Ephemeris for Wednesday, January 19th. Today the Sun will be up for 9 hours and 19 minutes, setting at 5:33, and it will rise tomorrow at 8:13. The Moon, 2 days past full, will rise at 7:15 this evening.
Let’s search for the naked-eye planets for this week. There are two planets left in the evening sky now. Jupiter will be visible in the southwest by 6:15 pm. Saturn might be visible below and right of it, much closer to the Horizon. Finding Saturn might require the use of a pair of binoculars. Saturn will set at 6:44, while Jupiter will set at 8:22 pm. In the morning sky, Mars will rise at 6:10 am while Venus, our brilliant morning star, will rise at 6:40 am. Both will appear low in the southeastern twilight by 7:15. Mars will be to the right and a bit higher than Venus. Mars’ rival in color and brightness, the red giant star Antares, is to its right and a bit higher. Another bright star is low in the east at that time, the summer evening star Altair.
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

Jupiter and Saturn at 6:15 pm, about 45 or so minutes after sunset over an unobstructed horizon. Jupiter will be quite bright in twilight, while Saturn may require binoculars to find. Created using Stellarium.

The waning gibbous Moon as it might appear in binoculars or small telescope at 8 pm (about 45 minutes after rising) tonight, January 19, 2022. Created using Stellarium.

Venus and Mars as they might appear at 7:15 am, about an hour before sunrise tomorrow morning, January 20, 2022. At that time, the waning gibbous moon will appear in the west. Click on the image to enlarge it. Created using Stellarium.

Telescopic views of the bright planets and their brighter moons (north up) as they would be seen in a small telescope, with the same magnification, overnight, January 19/20, 2022. I do not show planets less than 10 seconds of arc in diameter. Apparent diameters: Saturn 15.29″, its rings 35.63″; Jupiter, 34.19″. Mars is not shown, its apparent diameter is 4.19″. Venus has an apparent diameter of 58.07″ and is 5.2% illuminated. The ” symbol means seconds of arc (1/3600th of a degree.) Created using Cartes du Ciel (Sky Charts), though Venus’ image was enhanced in GIMP.












