Home > Conjunction, Ephemeris Program, Saturn, The Moon > 04/07/2015 – Ephemeris – The Moon will pass Saturn tomorrow morning

04/07/2015 – Ephemeris – The Moon will pass Saturn tomorrow morning

April 7, 2015

Ephemeris for Tuesday, April 7th.  The Sun will rise at 7:13.  It’ll be up for 13 hours and 4 minutes, setting at 8:17.   The Moon, 3 days past full, will rise at 11:36 this evening.

The planet Saturn is now rising shortly after midnight.  However it is still best seen in the early morning.  The Moon will be near Saturn when it rises and will get closer as the morning progresses.  By 6 a.m. the Moon will be about four of its widths above and right of Saturn.  The Moon will get its closest about 10 a.m., but by then it will be daylight and both will have set.  Every week Saturn will rise, and set about a half hour earlier.  That’s about an hour every two weeks, and two hours a month.  This works for the stars and is pretty close for slow-moving planets like Jupiter and Saturn.  So next month at this time Saturn will rise about 10 p.m., and in another month 9 p.m.  By then it will be in the sky at sunset, and visible all night.

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

Addendum

Saturn and Moon #1

Saturn and the Moon shortly after rising. 12:44 a.m., April 8, 2015. Created using Stellarium.

Saturn and Moon #2

Saturn and the Moon shortly after twilight starts. 5:30 a.m., April 8, 2015. Created using Stellarium.

Binocular Moon

The Moon as it might appear in binoculars at 5:30 a.m. April 8, 2015. Created using Stellarium.

Some Rules of Thumb about the rotation of the earth and its revolution around the Sun.

These are approximate:

Stars rise or set 4 minutes earlier each night.

That’s about a half hour every week, and

It’s about 2 hours every month.

2 hours times 12 months = 24h hours, one rotation of the Earth

As far as viewing the stars and Constellations goes, that’s why we see the constellations in the same positions every year at the same time.

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