Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  34 phi Cas  ·  NGC 436  ·  NGC 457  ·  The star φCas
NGC457 Owl cluster, Sergiy_Vakulenko
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NGC457 Owl cluster

NGC457 Owl cluster, Sergiy_Vakulenko
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NGC457 Owl 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 lies over 7,900 light years away from the Sun. It has estimated age of 21 million years. The cluster is sometimes referred by amateur astronomers as the Owl 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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NGC457 Owl cluster, Sergiy_Vakulenko