Celestial hemisphere:  Northern  ·  Constellation: Perseus (Per)  ·  Contains:  7 chi Per  ·  Double cluster  ·  Misam  ·  NGC 869  ·  NGC 884  ·  The star 7Per  ·  chi Persei Cluster  ·  h Persei Cluster
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Double Cluster (Caldwell 14), Adam Landefeld
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Double Cluster (Caldwell 14)

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Description

The Double Cluster is the common name for the naked-eye open clusters NGC 869 and NGC 884 which are close together in the constellation Perseus. NGC 869 and NGC 884 both lie at a distance of 7500 light years. NGC 869 has a mass of 3700 solar masses and NGC 884 weighs in at 2800 solar masses; however, later research has shown both clusters are surrounded with a very extensive halo of stars, with a total mass for the complex of at least 20,000 solar masses. Based on their individual stars, the clusters are relatively young, both 12.8 million years old. There are more than 300 blue-white super-giant stars in each of the clusters.

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  • Double Cluster (Caldwell 14), Adam Landefeld
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    Double Cluster (Caldwell 14), Adam Landefeld
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Double Cluster (Caldwell 14), Adam Landefeld