M10 (NGC 6254)
Messier 10 (NGC 6254) is a globular cluster located in the constellation Ophiucus, in the Galactic Center of the Milky Way Galaxy in the Local Group of galaxies. M10 is 14,300 light years away from Earth.
M10 is best viewed during mid-summer, is magnitude 6.4, and can be viewed with binoculars. M10 is 20' 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.