Archive
11/15/2017 – Ephemeris – All the bright planets are visible for observers at both dusk and dawn
Ephemeris for Wednesday, November 15th. The Sun will rise at 7:39. It’ll be up for 9 hours and 34 minutes, setting at 5:14. The Moon, 3 days before new, will rise at 5:32 tomorrow morning.
Let’s take our weekly look at the bright planets. Mercury is briefly visible in binoculars in the southwest in the evening, setting at 6:06 p.m., and will reach it’s greatest elongation from the Sun in 8 days. Saturn is sinking low in the southwestern sky. Saturn’s rings are still spectacular in telescopes, but since Saturn is so low in the sky the thick atmosphere makes Saturn fuzzy and seemingly to go in and out of focus. Saturn will set at 7:12 p.m. Tomorrow in the morning sky, Mars, heading away from the Sun will rise in the east at 4:16 a.m., Jupiter, also moving away from the Sun, will rise at in the east-southeast at 6:14, leaving Venus behind after their conjunction two days ago, which will rise at 6:30.
The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

Saturn and Mercury very low in the southwest at 6:45p.m. November 15, 2017. That’s about half an hour after sunset. Click on the image to enlarge. Created using Stellarium.

Saturn and its brightest moon Titan in the evening November 15, 2017. Created using Cartes du Ciel (Sky Charts).

Mars Jupiter Venus and the Moon at 7 a.m., November 16, 2017. The Moon is actually a thin crescent as seen below. Created using Stellarium.
11/13/2017 – Ephemeris – Close conjunction of Venus and Jupiter is visible this morning
Ephemeris for Monday, November 13th. The Sun will rise at 7:36. It’ll be up for 9 hours and 39 minutes, setting at 5:16. The Moon, 3 days past last quarter, will rise at 3:26 tomorrow morning.
This morning the planets Venus and Jupiter will appear a bit less than the moon apart after rising at 6:22 a.m. Venus is heading back to the Sun, actually around the back of the Sun. Jupiter is separating itself from the Sun. The velocity of a planet in its orbit decreases the farther from the Sun it is. This was discovered by Johannes Kepler back in he 17th century. Venus is closer to the Sun than the Earth, so after it passed the Earth back on March 25th passing between us and the Sun. It moved ahead of us reaching its greatest western separation from the Sun on June 3rd, is now heading around the bend, so to speak, behind the Sun, on January 9th. The Earth moves faster than Jupiter, so it is appearing to move away from the Sun.
The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
11/12/2017 – Ephemeris Extra – Venus and Jupiter will appear together tomorrow morning
Just a quick note. I’ll talk about it in more detail tomorrow on the program, but this post will get you a full day heads up. Venus and Jupiter have been approaching one another, at least from the Earth’s point of view for some time. Monday morning their path’s will seem to cross, with Jupiter heading away from the Sun and Venus heading toward the Sun.

Venus and Jupiter in conjunction at 7 a.m. November 13, 2017. Venus will be 6 times brighter than Jupiter. They will appear half the width of the Moon apart. Created using Stellarium.
These planets will rise at 6:22 a.m., a bit more than an hour before sunrise, at 7:36 a.m.
The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
11/08/2017 – Ephemeris – Jupiter becomes visible in the morning (The bright planets this week)
Ephemeris for Wednesday, November 8th. The Sun will rise at 7:30. It’ll be up for 9 hours and 51 minutes, setting at 5:21. The Moon, 2 days before last quarter, will rise at 9:52 this evening.
Let’s take our weekly look at the bright planets. Saturn is sinking low in the southwestern sky in the evening. Saturn’s rings are still spectacular in telescopes, but since Saturn is so low in the sky the turbulence of the thick atmosphere makes Saturn fuzzy and seemingly to go in and out of focus. Saturn will set at 7:37 p.m. Tomorrow in the morning sky, Mars, heading away from the Sun will rise in the east at 4:20 a.m., Venus, is heading closer to the Sun, will rise at 6:11 in the east-southeast. Jupiter is in the morning sky but lower than Venus, rising in the east-southeast at 6:33. Mercury has moved into the evening sky and will reach it’s greatest elongation from the Sun in 15 days, but will not be easily visible even then.
The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

Saturn with Mercury (unlabeled) at the horizon at 6 p.m., November 8, 2017. Click on the image to enlarge. Create using Stellarium.

Saturn and its brightest moon Titan in the evening November 8, 2017. Created using Cartes du Ciel (Sky Charts).

The Moon as it might be seen in binoculars at 10:30 p.m., November 8, 2017. Created using Stellarium.
11/01/2017 – Ephemeris – Looking at the bright planets for November 1st
Ephemeris for Wednesday, November 1st. The Sun will rise at 8:20. It’ll be up for 10 hours and 10 minutes, setting at 6:30. The Moon, 3 days before full, will set at 6:08 tomorrow morning.
Let’s take our weekly look at the bright planets for this first day of November. Saturn is sinking low in the southwestern sky in the evening. Saturn’s rings are still spectacular in telescopes, but since Saturn is so low in the sky the turbulence of the thick atmosphere makes Saturn fuzzy and seemingly to go in and out of focus. Saturn will set at 9:02 p.m.
Tomorrow in the morning sky, Mars, heading away from the Sun will rise in the east at 5:25 a.m., Venus, is heading closer to the Sun, will rise at 6:53 in the east. Jupiter is in the morning sky but too close to the direction of the Sun to be seen. Mercury has moved into the evening sky and will reach it’s greatest elongation from the Sun in 22 days, but will not be easily visible even then.
The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

Saturn and the Moon at 8 p.m. November 1, 2017. Click on the image to enlarge. Create using Stellarium.
10/11/2017 – Ephemeris – Lets find the bright planets tonight
Ephemeris for Wednesday, October 11th. The Sun will rise at 7:53. It’ll be up for 11 hours and 11 minutes, setting at 7:04. The Moon, 1 day before last quarter, will rise at 11:59 this evening.
Let’s take our weekly look at the bright planets. Jupiter, for all intents and purposes is gone from the evening sky. It will cross into the morning sky later this month. Saturn too is sinking lower in the southwestern sky in the evening. Saturn’s rings are still spectacular in telescopes, but since Saturn is so low in the sky the turbulence of the thick atmosphere makes Saturn fuzzy and seemingly to go in and out of focus. Saturn will set at 10:17 p.m. In the morning sky, Mars will rise in the east at 5:38 a.m., ahead of Venus. In the week since their conjunction Mars has gained 20 minutes on Venus, which will rise at 5:58 in the east. Mars is less than 100th the brightness of Venus, so catch it early, before twilight overpowers it..
The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

Saturn and the constellations of the evening tonight at 8:30 p.m., October 11, 2017. Click on the image to enlarge. Created using Stellarium.
09/27/2017 – Ephemeris – Where are the naked eye planets tonight
Ephemeris for Wednesday, September 27th. The Sun will rise at 7:35. It’ll be up for 11 hours and 54 minutes, setting at 7:29. The Moon, at first quarter today, will set at 12:16 tomorrow morning.
Let’s take our weekly look at the bright planets. Jupiter is really low in the west-southwest after sunset setting in bright twilight at 8:22 p.m. Saturn can be seen low in the southwest tonight. The reddish star Antares is below and right of Saturn before it sets at 9:50 p.m. Saturn’s rings are spectacular in telescopes. With the demise of the Cassini spacecraft orbiting Saturn for the last 13 years, there is no telescope closer to Saturn than yours. The planet will set at 11:09 p.m. In the morning sky, brilliant Venus will rise at 5:23 a.m. in the east-northeast. Much dimmer Mars will rise in the east-northeast at 5:46 a.m. Mars will brighten greatly as it approaches us in the next 10 months. Mercury is too close to the glare of the Sun to be spotted.
The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum
09/20/2017 – Ephemeris – Looking for the bright planets
Ephemeris for Wednesday, September 20th. The Sun will rise at 7:27. It’ll be up for 12 hours and 15 minutes, setting at 7:43. The Moon is new today, and won’t be visible.
Let’s take our weekly look at the bright planets. Jupiter is really low in the west-southwest after sunset setting in twilight at 8:47 p.m. Saturn can be seen low in the southwest tonight. The reddish star Antares is below and right of Saturn before it sets at 10:18 p.m. Saturn’s rings are spectacular in telescopes. With the demise of the Cassini spacecraft orbiting Saturn for the last 13 years, there is no telescope closer to Saturn than yours. The planet will set at 11:35 p.m. In the morning sky, brilliant Venus will rise at 5:03 a.m. in the east-northeast. The first magnitude star Regulus in Leo the lion will be to the upper right of it. Dim Mars will rise in the east-northeast at 5:50 a.m. followed by the brighter Mercury which will rise at 6:12 a.m.
The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

The setting Jupiter and Saturn at 8:15 p.m., September 20, 2017. Created using Stellarium. Click on the image to enlarge.

Saturn and constellations in dark skies at 9 p.m. September 20, 2017. Created using Stellarium. Click on the image to enlarge.
09/13/2017 – Ephemeris – Looking for the bright planets this week
Ephemeris for Wednesday, September 13th. The Sun will rise at 7:19. It’ll be up for 12 hours and 36 minutes, setting at 7:56. The Moon, at last quarter today, will rise at 1:05 tomorrow morning.
Let’s take our weekly look at the bright planets. Jupiter is sinking really low in the west-southwest setting before the end of twilight. Jupiter will set at 9:11 p.m. Saturn can be seen moving from the south-southwest to the southwest tonight. The reddish star Antares is below and right of Saturn. Saturn’s rings are spectacular in telescopes. The planet will set at midnight. In the morning sky, brilliant Venus will rise at 4:48 a.m. Mercury will rise at 5:46 and Mars will rise at 5:54 a.m.
The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

The setting Jupiter and Saturn at 8:30 p.m., September 13, 2017. Created using Stellarium. Click on image to enlarge.

Saturn and its brightest moons overnight September 13/14, 2017. Created using Cartes du Ciel (Sky Charts).

Planets in the morning sky at 6:30 a.m. September 14, 2017. Created using Stellarium. Click on the image to enlarge.
09/06/2017 – Ephemeris – A look at the bright planets known from antiquity
Wednesday, September 6th. The Sun will rise at 7:11. It’ll be up for 12 hours and 58 minutes, setting at 8:09. The Moon, at full today, will rise at 8:38 this evening.
Let’s take our weekly look at the bright planets. Jupiter is sinking really low in the west-southwest setting before the end of twilight. The bright blue-white star Spica, which pales in comparison to Jupiter, is seen below it dimly in the twilight. It will pass north of Spica on September 11th. Jupiter will set at 9:36 p.m. Saturn can be seen moving from the south-southwest to the southwest tonight. The reddish star Antares is below and right of Saturn. Saturn’s rings are spectacular in telescopes. The planet will set at 12:29 a.m. In the morning sky, brilliant Venus will rise at 4:31 a.m. and be visible until about 6:45 tomorrow morning. Mars and Mercury follow Venus up in the east rising just before 6 a.m.
The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Addendum

The setting Jupiter and Saturn near the Moon at 9 p.m., September 6, 2017. Created using Stellarium. Click on image to enlarge.

Saturn and its brightest moons overnight September 6/7, 2017. Created using Cartes du Ciel (Sky Charts).

A 3 day animation od Mercury, te star Regulus and Mars starting September 7, 2017 at 6:30 a.m. Created using Stellarium and GIMP. Click on image to enlarge.
On Friday I’ll have an animation that will take these planets further.

Planets at sunset and sunrise of a single night starting with sunset on the right on September 6, 2017. The night ends on the left with sunrise on the 7th. Click on the image to enlarge. Created using my LookingUp program.
























