Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  NGC 637
NGC637 Open Star Cluster, AlBroxton
NGC637 Open Star Cluster
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NGC637 Open Star Cluster

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Description

NGC637 is an open cluster of stars in the constellation Cassiopeia. It has a Trumple13.1": rich cluster of two dozen stars arranged in an arc. There are five bright stars including a mag 10/11.2 double star at 9" separation. 8": 10 stars in cluster includes four mag 10 stars and fainter, mottled, over haze. At a distance of approximately 7,045 light years, this corresponds to a diameter of 9.8 light-years (3.0 pc). The estimated age of this cluster is 5–15 million years. Discovered by William Herschel 1787.

Observation Notes : 16 stars counted at 135X. Bright, pretty large, not compressed, pretty rich. Several of the brighter stars are about 10th mag. There is a lovely triangle of stars near the center. The cluster is easy in the 11X80 finder.





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  • NGC637 Open Star Cluster, AlBroxton
    Original
  • Final
    NGC637 Open Star Cluster, AlBroxton
    B

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NGC637 Open Star Cluster, AlBroxton