M55 (NGC 6809) - Summer Rose Star
Messier 55 (NGC 6809), also known as the Summer Rose Star, is a globular cluster located in the constellation Sagittarius, in the Galactic Center of the Milky Way Galaxy in the Local Group of galaxies. M55 is 17,600 light years away from Earth.
M55 is best viewed during late summer, is magnitude 7.4, and can be viewed with binoculars. M55 is 19' 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.