Archive for July 12, 2017

07/12/2017 – Ephemeris – Let’s check out the whereabouts of the bright planets

July 12, 2017 1 comment

Ephemeris for Wednesday, July 12th. Today the Sun will be up for 15 hours and 17 minutes, setting at 9:26, and it will rise tomorrow at 6:10. The Moon, 3 days past full, will rise at 11:32 this evening.

Let’s take our weekly look at the bright planets. Jupiter is in the southwest as it gets dark in the evening. The bright blue-white star Spica, which pales in comparison to Jupiter, is seen left of it. In even the smallest telescopes Jupiter’s four largest moons can be seen. They shift positions from night to night. Jupiter will set at 12:58 a.m. Saturn can now be seen in the evening as twilight fades in the south. The reddish star Antares is off to the right of Saturn. Saturn’s rings are spectacular in telescopes. Saturn will set at 4:15 a.m. In the morning sky, brilliant Venus will rise at 3:23 a.m. and be visible until about quarter to 6 tomorrow morning. Mercury sets too close to sunset to be easily seen now.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.


Evnng planets

Jupiter and Saturn with the southern summer constellations at 10:30 p.m., July 12, 2017. Created using Stellarium.

Jupiter and its moons

Jupiter and three of its moons. Europa is behind the planet at 10:30 p.m,. July 12, 2017. Created using Cartes du Ciel (Sky Charts).

Project Pluto has the following events for the 12/13th:

Time is UT.  Events prior to 13 July 1:47 UT (9:47 p.m. 12 July EDT) will not be visible from Northern Michigan.  Data from Project Pluto:  The website also has a link to a list of Great Red Spot transits.

I : Tra start: 12 Jul 2017 23:25
I : Sha start: 13 Jul 2017 0:41
I : Tra end : 13 Jul 2017 1:36
II : Occ start: 13 Jul 2017 1:47
I : Sha end : 13 Jul 2017 2:51
II : Occ end : 13 Jul 2017 4:16
II : Ecl start: 13 Jul 2017 4:20
II : Ecl end : 13 Jul 2017 6:42
III: Occ start: 13 Jul 2017 7:10
III: Occ end : 13 Jul 2017 9:45
III: Ecl start: 13 Jul 2017 12:29
III: Ecl end : 13 Jul 2017 14:40

Satellites: I = Io, II = Europa, and III = Ganymede
Tra = Transit of a satellite across the face of Jupiter, Sha = Transit of a moon’s shadow, Ecl = Eclipse (In Jupiter’s shadow), Occ = Occultation (Moon behind the planet).

The Great Red Spot transit: 13 Jul 2017 02:01 (10:01 p.m. 12 July EDT).

Saturn and its moons

Saturn and its brightest moons overnight July 12/13, 2017. Created using Cartes du Ciel (Sky Charts).

Venus and the Moon

Venus and the Moon at 5 a.m. July 13, 2017. Created using Stellarium. Click on the image to expand.

Telesopic Venus

Venus as it might be seen through a telescope at 5 a.m. July 13, 2017. This is displayed at a larger scale/magnification than the Jupiter or Saturn images above. Created using Stellarium.

Planets and Moon on a single night

Planets at sunset and sunrise of a single night starting with sunset on the right on July 12, 2017. The night ends on the left with sunrise on July 13. Click on the image to enlarge. Created using my LookingUp program.