Perseus OB1

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Perseus OB1 is an OB association in the Northern Celestial Hemisphere in the constellation Perseus. It contains the double cluster (NGC 869 and NGC 884), and has lent its name to the Perseus Arm of the Milky Way.[1]


  1. ^ Inglis, Michael (2013). Observer’s Guide to Star Clusters. New York, New York: Springer Science & Business Media. p. 184. ISBN 9781461475675.