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Messier Catalog M4

M4 (NGC 6121)

Messier M4 (NGC 6121) is a globular cluster located in the constellation Scorpius, in the Galactic Center of the Milky Way Galaxy. in the Local Group of galaxies.

Messier M4 is best viewed during mid-summer, is magnitude 5.9*, and can be viewed with naked eye (just barely). It is 26.3' in size. For reference, the full moon is 30' (arc minutes) in size.

      1. Name:
      1. Type:
      2. globular cluster
      1. NGC:
      2. 6121
      1. Magnitude (m):
      2. 5.9
      1. Viewing:
      2. naked eye (just barely)
      1. Size:
      2. 26.3'
      1. RA:
      2. 16h 23.6m
      1. Dec:
      2. -26 32'
      1. Season:
      2. mid-summer
      1. Milky Way location:
      2. Galactic Center
      1. Galaxy group:
      2. Local Group

    * The naked eye can see up to magnitude 8 objects under ideal dark sky conditions.



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