M101 (NGC 5457) - Pinwheel Galaxy
Messier 101 (NGC 5457), also known as the Pinwheel Galaxy, is a spiral galaxy located in the constellation Ursa Major in the M101 Group of galaxies. M101 is 21,000,000 light years away from Earth.
M101 is best viewed during early spring, is magnitude 7.9, and can be viewed with binoculars. M101 is 28.8' x 27' in apparent size. For reference, the full moon is 30' (arc minutes) in size.
* The naked eye can see up to magnitude 8 objects under ideal dark sky conditions.