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Star Cluster

Messier 4 :
globular star cluster

Messier 4 is a globular star cluster located in the constellation Scorpius . Messier 4 is magnitude 5.63*, and is 36' in size. For reference, the full moon is 30' (arc minutes) or 0.5° in size.

      1. Name:
      2. Messier 4
      1. Type:
      2. globular cluster
      1. Magnitude (m):
      2. 5.63
      1. Size:
      2. 36'
      1. Right Ascension:
      2. 16h 23m 35.36s
      1. Declination:
      2. -26° 31' 32.7"
      1. Messier #:
      2. M4

    * One can see up to magnitude 7-8 objects with perfect eyes under ideal dark sky conditions.



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