Perseus OB1
Perseus OB1 is a 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.
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Wikipedia
Perseus OB1 is a 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.