Messier M101 - Pinwheel Galaxy
M101 (NGC 5457), also known as Pinwheel Galaxy, is a spiral galaxy located within the constellation Ursa Major in the M101 Group of galaxies.
M101 is best viewed during early spring, is magnitude 8.5*, and can be viewed with binoculars. It is 22' in 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.
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