Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  NGC 457  ·  The star φCas
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NGC457  The E.T. Cluster , Mike
NGC457  The E.T. Cluster
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NGC457 The E.T. Cluster

Getting plate-solving status, please wait...
NGC457  The E.T. Cluster , Mike
NGC457  The E.T. Cluster
Powered byPixInsight

NGC457 The E.T. Cluster

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Description

NGC 457 (also known as the Owl Cluster, the ET Cluster, or Caldwell 13) is an open star cluster in the constellation Cassiopeia. It was discovered by William Herschel in 1787,[2] and lies over 7,900 light years away from the Sun. It has an estimated age of 21 million years.[1] The cluster is sometimes referred by amateur astronomers as the Owl Cluster, Kachina Doll Cluster,[2] the ET Cluster (due to its resemblance to the movie character) or the "Skiing Cluster". Two bright stars, magnitude 5 Phi-1 Cassiopeiae and magnitude 7 Phi-2 Cassiopeiae can be imagined as eyes. The cluster features a rich field of about 150 stars of magnitudes 12-15

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Revisions

  • NGC457  The E.T. Cluster , Mike
    Original
  • NGC457  The E.T. Cluster , Mike
    B
  • NGC457  The E.T. Cluster , Mike
    C
  • NGC457  The E.T. Cluster , Mike
    D
  • NGC457  The E.T. Cluster , Mike
    E
  • Final
    NGC457  The E.T. Cluster , Mike
    F

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NGC457  The E.T. Cluster , Mike

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Cloudy Nights