M55 (NGC 6809)
Messier M55 (NGC 6809) is a globular cluster located in the constellation Sagittarius, in the Galactic Center of the Milky Way Galaxy. in the Local Group of galaxies.
Messier M55 is best viewed during late summer, is magnitude 7.0*, and can be viewed with binoculars. It is 19' 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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