Archive
01/30/2013 – Ephemeris – Where are the bright planets this week?
Ephemeris for Wednesday, January 30th. The sun will rise at 8:03. It’ll be up for 9 hours and 45 minutes, setting at 5:48. The moon, half way from full to last quarter, will rise at 9:58 this evening.
Let’s check out the planets for this week. Mars can be seen low in the west southwest. It will set at 7:15 p.m, two minutes later than last week because Mars is moving northward. The sun is gaining on it since it sets 10 minutes later each week. Jupiter will be visible in the southeast as it gets dark. Jupiter is located in the constellation of Taurus and moves from the southeast to the high south southwest during the evening. It will transit or pass due south at 8:15 p.m, and will set at 3:45 a.m. Jupiter is a wonderful sight in telescopes with its cloud bands and its moons which change positions each night. Saturn will be the next planet to rise at 1:24 a.m. in the east southeast. It’s located in eastern Virgo. Saturn will pass due south at 6:38 a.m.
Times are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

Mars low in the west southwest with Mercury just below the horizon at 6:30 p.m. on January 30, 2013. Created using Stellarium.
On February 8th Mercury will appear closest to Mars. Mercury’s greatest elongation from the sun will be on February 16th.
Also see the Pleiades right and just above Jupiter.
The moon will pass Saturn Sunday morning February 3rd.
12/12/2012 – Ephemeris – Where are the bright planets this week?
Ephemeris for Wednesday, December 12th. The sun will rise at 8:10. It’ll be up for 8 hours and 51 minutes, setting at 5:02. The moon, 1 day before new, will rise at 8:18 tomorrow morning.
Let’s check out the planets for this week. Mars can be seen low in the southwest. It will set at 7:04 p.m. The planetary action will have already picked up on the other side of the sky. Jupiter is located in the constellation of Taurus on the southeast in the evening. It will transit or pass due south at 11:47 p.m, and will set at 7:19 a.m. Saturn will be the next planet to rise at 4:24 a.m. in the east southeast. Venus will rise at 6:02 and is below and left of Saturn. Mercury will rise at 6:36 a.m. Below and left of Venus. A half an hour later it should be high enough to spot. The three planets will appear in a straight line and nearly equally spaced. After a few days Mercury will not be visible again until next February.
Times are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

Mars low in the southwest at 6:15 p.m. on December 12, 2012. Created using Stellarium.

Jupiter and the winter stars at 9 p.m. December 12, 2012. Created using Stellarium.

Jupiter with its Great Red Spot November 18, 2012 by Scott Anttila.

Jupiter with Callisto above, Ganymede and its shadow below on December 6, 2012 by Scott Anttila, Click to enlarge.

Saturn, Venus and Mercury at 6:45 a.m. ay December 13, 2012. Created using Stellarium.
12/05/2012 – Ephemeris – Where are all the bright planets this week?
Ephemeris for Wednesday, December 5th. The sun will rise at 8:04. It’ll be up for 8 hours and 58 minutes, setting at 5:02. The moon, 1 day before last quarter, will rise at 12:03 tomorrow morning.
Let’s check out the planets for this week. All 5 classical planets are visible now. Mars can be seen low in the southwest. Mars will set at 7:05. The planetary action will have already picked up on the other side of the sky. Jupiter is located in the constellation of Taurus on the southeast in the evening. It will transit or pass due south at 12:18 a.m, and will set at 7:51. Saturn will be the next planet to rise at 4:48 a.m. in the east southeast. Venus will rise at 5:44 and is below and left of Saturn. Mercury will rise at 6:16 a.m. Below and left of Venus. A half an hour later it should be high enough to spot . The three planets will appear in a straight line and nearly equally spaced. After about a week, Mercury will not be visible again until next spring.
Times are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

Mars low in the southwest at 6:15 p.m. on December 5, 2012. Created using Stellarium.

Jupiter and the winter stars at 9 p.m. on December 5, 2012. Created using Stellarium.

Mercury animation from December 4 to thru 12, 2012. Created using Stellarium
12/04/2012 – Ephemeris – Mercury in the morning
Ephemeris for Tuesday, December 4th. The sun will rise at 8:02. It’ll be up for 8 hours and 59 minutes, setting at 5:02. The moon, 2 days before last quarter, will rise at 10:59 this evening.
The planet Mercury has joined the morning planets for a week or so. Mercury can be best spotted low in the east southeast starting about 7 a.m. It will be below and slightly left of Venus, the brightest planet, about the same distance below as Saturn is above Venus. They’re just about in straight line. Binoculars will help in the search. Once found Mercury may be tracked past 7:30. Mercury will be visible for about a week as become somewhat brighter as it does. That’s because Mercury’s phase at its half illuminated today at its greatest elongation from the sun. It will be becoming more and more full as it moves around the sun mostly away from us now. Mercury is a prise, few people have ever seen it.
Times are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

Mercury animation starting December 4, 2012. Created using Stellarium
Note the passage of the moon on the mornings of the 10th and 11th. The moon will actually be a thin crescent.
11/28/2012 – Ephemeris – Where are the bright planets this week?
Ephemeris for Wednesday, November 28th. The sun will rise at 7:56. It’ll be up for 9 hours and 8 minutes, setting at 5:04. The moon, at full today, will rise at 5:18 this evening.
Let’s check out the planets for this week. First there will be a penumbral eclipse of the moon this morning which we will not be able see. Penumbral eclipses are not very noticeable. At 6:15 p.m. Mars can be seen low in the southwest. Mars will set at 7:07. The planetary action will have already picked up on the other side of the sky. Jupiter, will rise at 5:16 p.m. in the east northeast. It is located in the constellation of Taurus. Tonight it will appear right above the moon. It will transit or pass due south at 12:49 a.m. Jupiter will reach opposition from the sun this Saturday December 1st, and will officially be part of the evening sky. Saturn will be the next planet to rise at 5:15 a.m. in the east southeast. Venus will rise at 5:23 and is almost directly below Saturn. Mercury will rise at 6:13 and will be seen below and left of Venus.
Times are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
07/06/2012 – Ephemeris – Sun and planet viewing tonight
Ephemeris for Friday, July 6th. Today the sun will be up for 15 hours and 25 minutes, setting at 9:29. The moon, 3 days past full, will rise at 11:06 this evening. Tomorrow the sun will rise at 6:05.
This evening the Grand Traverse Astronomical Society will hold its monthly meeting at the Northwestern Michigan College’s Rogers Observatory at 8 p.m. This meeting will be devoted to viewing the sun through the society’s new solar telescope. After that starting at 9 p.m. Will be a star party. For both events, the public is welcome. The tiny planet Mars and the ringed planet Saturn will be visible as will a number of binary stars and brighter wonders of the heavens as the skies darken. Mercury is now receded toward the sun so is not visible. For the rest of the abbreviated planet report this week: A note for early risers that Jupiter and Venus make a fine sight low in the east northeast in the morning after 5 a.m.
Times are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
06/28/2012 – Ephemeris – Mercury near greatest elongation from the sun
Ephemeris for Thursday, June 28th. Today the sun will be up for 15 hours and 31 minutes, setting at 9:31. The moon, 2 days past first quarter, will set at 2:16 tomorrow morning. Tomorrow the sun will rise at 6:00.
Saturday will be the greatest eastern elongation of Mercury from the sun. It’s a whopping 26 degrees angle east from the sun. Mercury has a markedly elliptical orbit. And when we have a spring eastern elongation, its around 18 degrees from the sun. The best western elongations for us are in the autumn when again the elongation angle is 18 degrees. I won’t go into the why of all this here. But we’re getting an extra good view of this tiny planet. The best time to look for Mercury starts about 10:15 p.m. and ends about 10:45 when Mercury is too close to the horizon. The stars Pollux and Castor of Gemini will appear just to the right of Mercury, and will provide a check that you really have found it.
Times are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
06/27/12012 – Ephemeris – Where are the bright planets this week?
Wednesday, June 27th. Today the sun will be up for 15 hours and 32 minutes, setting at 9:31. The moon, 1 day past first quarter, will set at 1:40 tomorrow morning. Tomorrow the sun will rise at 5:59.
Let’s see what’s happening with the bright planets for this week. Mercury is in the evening sky but very low in the west northwest about 45 minutes after sunset. It will set at 11:04 p.m. Mars, with its unmistakable bright reddish color, is in the west southwest in the evening entering the constellation of Virgo the virgin. Mars will be setting in the west at 1:15 a.m. Saturn will be in the south southwest above the bright star Spica now. It will set at 2:21 a.m. Jupiter, now a morning planet will rise at 3:53 a.m. in the east northeast. Venus, is now seen below Jupiter after it rises at 4:23 a.m. [They are striking in telescopes with Venus as a large thin crescent, and Jupiter with its cloud bands and satellites.]
Times are for the Traverse City/Interlochen area of Michigan. They may be different for your location. Bracketed text was omitted from the audio program due to time constraints.
Addendum
06/25/2012 – Venus and Jupiter in the morning and Mercury in th evening
Ephemeris for Monday, June 25th. Today the sun will be up for 15 hours and 33 minutes, setting at 9:31. The moon, 1 day before first quarter, will set at 12:41 tomorrow morning. Tomorrow the sun will rise at 5:59.
You’ve got to be an early riser for this, say about quarter after 5. Venus and Jupiter will appear close together low in the east northeast in the growing twilight. It’s reminiscent of their evening show. However their paths will not cross. The brighter Venus appears below and to the left of the dimmer Jupiter. They will be their closest around July 3rd. Then Jupiter will outpace Venus. In the evening sky the dim planet Mercury is making an appearance. Start looking to the west northwest about 10:15 for this elusive planet. Here binoculars will help. The bright stars Pollux and Castor are to its right and nearly in a horizontal line to it. Mercury, though is brighter than they are so you should spot Mercury first.
Times are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
06/21/2012 – Ephemeris – Where are the bright planets this week?
Ephemeris for Thursday, June 21st. Today the sun will be up for 15 hours and 33 minutes, setting at 9:31. The moon, 2 days past new, will set at 10:48 this evening. Tomorrow the sun will rise at 5:57.
Let’s see what’s happening with the bright planets for this week, one day late. Mercury is in the evening sky but very low in the west northwest about 45 minutes after sunset. It will set at 11:09 p.m. Mars is in the west southwest in the evening between the constellations Leo the lion and Virgo with its unmistakable bright reddish color. Mars will be setting in the west at 1:33 a.m. Saturn will be in the south southwest above the bright star Spica now. It will set at 2:45 a.m. Jupiter, now a morning planet will rise at 4:10 a.m. in the east northeast. Venus, is now in the morning sky will rise at 4:45 a.m. In the east northeast. It’s making its debut as the morning star.
Times are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
This is just an hour after sunset. The moon is really a very thin crescent, and is much dimmer than is shown here. Click to expand. When expanded the images above and below will appear at the same scale.
This shows the sky an hour before sunrise tomorrow. In actuality Venus is much brighter than Jupiter.











