M54 (NGC 6715)
Messier 54 (NGC 6715) is a globular cluster located in the constellation Sagittarius, in the Galactic Center of the Milky Way Galaxy in the Local Group of galaxies. M54 is 87,400 light years away from Earth.
M54 is best viewed during late summer, is magnitude 8.4, and can be viewed with binoculars. M54 is 12' 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.