Bob Moler's Ephemeris Blog

Ephemeris for Monday, October 22nd.  The sun will rise at 8:07.  It’ll be up for 10 hours and 38 minutes, setting at 6:45.   The moon, 1 day past first quarter, will set at 1:45 tomorrow morning.

Tonight’s slightly gibbous moon will reveal at its terminator a line of three craters just below the center of the moon.  The one closest to the center of the moon, and the largest is Ptolemaeus, names for Claudius Ptolemy 2nd century astronomer. The next crater is Alphonsus named after Alphonse X, 13th century king of Castille, and responsible for improved astronomical tables.  Alphonsus has been the site of transient reddish hazes that soggest to som of volcanis activity, but it’s never been proven.  It was the target of the last Ranger spacecraft that crashed onto the moon taking pictures all the way down.  The third crater is Arzackel , named after an 11th century Arabian astronomer.

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

Addendum

The moon at 10 p.m. on October 22, 2012. Created using Virtual Moon Atlas.