Go-astronomy logo


Caldwell 23
Caldwell 23
Credit: NASA, ESA

C23

Caldwell 23 (NGC 891) is a galaxy located within the constellation Andromeda.

C23 is best viewed during Fall, is magnitude 9.9*, and can be viewed with large binoculars. It is 14 x 2' in size. For reference, the full moon is 30' (arc minutes) in size.

      1. Name:
      1. Type:
      2. galaxy
      1. NGC:
      2. 891
      1. Magnitude:
      2. 9.9
      1. Viewing:
      2. large binoculars
      1. Size:
      2. 14 x 2'
      1. RA:
      2. 02 22.6
      1. Dec:
      2. +42 21'
      1. Season:
      2. Fall


    * The naked eye can see up to magnitude 8 objects under ideal dark sky conditions.