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Messier Objects

Messier M103

M103 (NGC 581) is a open cluster located within the constellation Cassiopeia, in the Perseus Arm of the Milky Way Galaxy. in the Local Group of galaxies.

M103 is best viewed during winter, is magnitude 7.0*, and can be viewed with binoculars. It is 6' in size. For reference, the full moon is 30' (arc minutes) in size.

      1. Name:
      1. Type:
      2. open cluster
      1. NGC:
      2. 581
      1. Magnitude (m):
      2. 7.0
      1. Viewing:
      2. binoculars
      1. Size:
      2. 6'
      1. RA:
      2. 1h 33.2m
      1. Dec:
      2. 60 42'
      1. Season:
      2. winter
      1. Milky Way location:
      2. Perseus Arm
      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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