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Messier 100
Messier 100
Credit: NASA, ESA

M100 (NGC 4321)

Messier 100 (NGC 4321) is a spiral galaxy located in the constellation Coma Berenices in the Virgo Cluster of galaxies. M100 is 55,000,000 light years away from Earth.

M100 is best viewed during late spring, is magnitude 9.5, and can be viewed with small telescope. M100 is 7.4' x 6.3' in apparent size. For reference, the full moon is 30' (arc minutes) in size.

      1. Name:
      1. Type:
      2. spiral galaxy
      1. NGC or IC:
      2. NGC 4321
      1. Magnitude:
      2. 9.5
      1. Viewing:
      2. small telescope
      1. Size:
      2. 7.4' x 6.3'
      1. Distance (light years):
      2. 55,000,000 LY
      1. RA:
      2. 12h 23.0m
      1. Dec:
      2. 15 50'
      1. Season:
      2. late spring
      1. Galaxy group:
      2. Virgo Cluster

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