Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  M 23  ·  NGC 6494
M 23   Open Star Cluster, AlBroxton
M 23   Open Star Cluster
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M 23 Open Star Cluster

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Description

Messier 23 (also known as NGC 6494) is an open cluster in the constellation Sagittarius. It was discovered by Charles Messier on June 20, 1764. M23 is at a distance of about 2,150 light-years away from Earth, its radius is around 15-20 light years. There are some 150 identified members in this cluster, the brightest being of magnitude 9.2. M23 can be found with a modestly sized telescope in the rich star fields of the Sagittarius Milky Way. This cluster lies about 2,150 light-years from Earth and contains about 150 stars of magnitude 10 and fainter. It stretches over a distance of about 20 light-years in diameter and has a total visual magnitude of 6.9. M23 can easily be resolved with binoculars and its large size makes it a prime candidate for small, wide-field telescopes.

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M 23   Open Star Cluster, AlBroxton