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Open Cluster M23 (also known as Messier Object 23, Messier 23, M23, or NGC 6494) is an open cluster in the Sagittarius constellation. It was discovered by Charles Messier on June 20, 1764. M23 is at a distance of about 2,150 light-years away from Earth.

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Messier 23, SEDS Messier pages

Messier objects NGC objects Open clusters Sagittarius constellation

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