Messier 99: Coma Pinwheel
Messier 99 (M99), also known as the Coma Pinwheel or Virgo Cluster Pinwheel, is an unbarred spiral galaxy in Coma Berenices. The galaxy is a member of the Virgo Cluster. It has an apparent magnitude of 10.4 and lies at a distance of 55.7 million light years from Earth. Its designation in the New General Catalogue is NGC 4254.
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