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Caldwell 21

Caldwell 21 irregular

Caldwell 21, is located in the constellation Canes Venatici, and is best seen in spring.

Caldwell 21 is magnitude 9.4, and is 5 x 3 in size. For reference, the full moon is 30' (arc minutes) or 0.5° in size.

      1. Name:
      2. Caldwell 21
      1. Type:
      2. irregular
      1. Magnitude (m):
      2. 9.4
      1. Size:
      2. 5 x 3'
      1. NGC:
      2. 4449
      1. Caldwell #:
      2. C21

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



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