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Star Cluster

Messier 55 :
globular star cluster

Messier 55 is a globular star cluster located in the constellation Sagittarius . Messier 55 is magnitude 6.32*, and is 19' in size. For reference, the full moon is 30' (arc minutes) or 0.5° in size.

      1. Name:
      2. Messier 55
      1. Type:
      2. globular cluster
      1. Magnitude (m):
      2. 6.32
      1. Size:
      2. 19'
      1. Right Ascension:
      2. 19h 39m 59.71s
      1. Declination:
      2. -30° 57' 53.1"
      1. Messier #:
      2. M55

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



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