M25 (NGC IC4725)
Messier M25 (NGC IC4725) is a open cluster located in the constellation Sagittarius, in the Orion Arm of the Milky Way Galaxy. in the Local Group of galaxies.
Messier M25 is best viewed during late summer, is magnitude 4.9*, and can be viewed with naked eye (barely). It is 40' 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.
Find your inner astronomer. Your complete guide to amateur astronomy.