04/06/2016 – Ephemeris – Mercury makes its spring appearance in the west – Plus Jovian moon hijinx
Ephemeris for Wednesday, April 6th. The Sun will rise at 7:13. It’ll be up for 13 hours and 3 minutes, setting at 8:17. The Moon, 1 day before new, will rise at 7:30 tomorrow morning.
Let’s check out the whereabouts of the bright naked eye planets. Mercury is in the west-northwest, very low to the horizon, setting at 9:35 p.m. Jupiter is in the southeast in the evening, and will pass due south, astronomers call it a transit, at 11:45 p.m., and will set at 6:16 a.m. It’s below the stars of Leo this year. Binoculars can make out some of Jupiter’s moons, but a telescope is required to see all four bright moons and Jupiter’s cloud formations. Mars will rise next at 12:31 a.m. in the east-southeast. It’s above Scorpius but moved into western Ophiuchus now. Saturn will rise at 1:06 a.m. in the east-southeast. It’s just left of Mars. Its rings are a telescopic treat. Venus will rise at 6:47 a.m. due east.
Times are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
If you are using Firefox right-click on the image and select View image to enlarge.
Jovian satellite events overnight
Io and Ganymede will pass in front (transit) the face of Jupiter, while Europa pass behind and be occulted by Jupiter.
|Event||Date/Time EDT||Date/Time UT|
|Io Transit Starts||6||9:52 p.m.||7||01:52|
|Io Shadow Crossing Starts||6||10:30 p.m.||7||02:32|
|Europa Occultation Starts||6||10:48 p.m.||7||02:48|
|Io Transit Ends||7||12:06 a.m.||7||04:06|
|Io Shadow Crossing Ends||7||12:47 a.m.||7||04:47|
|Ganymede Transit Starts||7||1:00 a.m.||7||05:00|
|Europa Eclipse Ends*||7||2:53 a.m.||7||06:53|
|Ganymede Shadow Crossing Starts||7||3:44 a.m.||7||07:44|
|Ganymede Transit Ends||7||4:15 a.m.||7||08:15|
|Ganymede Shadow Crossing Ends||7||Not up||7||11:00|
|* When Europa’s occultation ends it will still be in Jupiter’s shadow and will enter sunlight a bit away from the planet.|
Timings are from Project Pluto.
The planets at sunrise and sunset