Archive
11/13/2014 – Ephemeris – The Great Andromeda Galaxy
Ephemeris for Thursday, November 13th. The sun will rise at 7:36. It’ll be up for 9 hours and 40 minutes, setting at 5:16. The moon, 1 day before last quarter, will rise at 11:36 this evening.
The Great Andromeda Galaxy that we amateur astronomers usually call M31 is the closest spiral galaxy to our own Milky Way Galaxy. It is actually visible to keen-eyed observers to the naked eye. To locate it, first find the Great Square of Pegasus, 4 stars high in the south that make a pretty good square. From the top left star, Alpheratz, direct your gaze to the first two stars in a slightly curved line to the left to Mirach. Then go two stars up. The last one is a bit dim. But just to the upper right of that last star is a little fuzzy spot. That is the core of the Great Andromeda Galaxy. In binoculars it looks elongated. Photographs show the galaxy to span 6 Moon widths. It is somewhat larger than our galaxy and will collide with the Milky Way in about 4 billion years.
Times are for the Traverse City/Interlochen area of Michigan. They may be different for your location.


