Bob Moler's Ephemeris Blog

Ephemeris for Tuesday, September 4th.  The sun will rise at 7:09.  It’ll be up for 13 hours and 3 minutes, setting at 8:12.   The moon, half way from full to last quarter, will rise at 9:51 this evening.

Rising ever higher in the east at as it gets dark around 9:30 p.m. can be found one of the great autumn constellations: Pegasus the flying horse of Greek myth.  Its most visible feature is a large square of four stars, now standing on one corner.  This feature, called the Great Square of Pegasus, represents the front part of the horse’s body.  The horse is quite aerobatic, because it is seen flying upside down.  Remembering that fact, the neck and head is a bent line of stars emanating from the right corner star of the square.  Its front legs can be seen in a gallop extending to the upper right from the top star of the square.  From the left star extend, not hind legs but the constellation of Andromeda, a fascinating constellation in its own right.  We’ll be checking out Andromeda this fall.

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

Addendum

Pegasus at 9 p.m. Chart created using Stellarium.