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Messier M4

M4 (NGC 6121) is a Globular Cluster located in the constellation Scorpius, is best viewed during Mid-Summer, and is magnitude 5.9. The naked eye can see magnitude 6 objects (magnitude 8 under ideal dark sky conditions). It is 26.3' in size. For reference, the full moon is 30' (arc minutes) in size, or 1/2°.

      1. Name:
      2. N/A
      1. Type:
      2. Globular Cluster
      1. NGC:
      2. 6121
      1. Magnitude:
      2. 5.9
      1. Size:
      2. 26.3'
      1. RA:
      2. 16h 23.6m
      1. Dec:
      2. -26 32'
      1. Season:
      2. Mid-Summer

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