Messier 21

Messier 21 (also known as NGC 6531 ) is a 5.9 likes bright cluster with a surface area of 13 ' in the constellation Sagittarius. M21 is not easy to observe in Central Europe because of its southern location.

See also: Messier Catalog

Declination Radial velocity Light-year Charles Messier 1764 Messier object New General Catalogue Open cluster Messier 22 List of NGC objects NGC 6520 NGC 6522 Red Spider Nebula NGC 6539 NGC 6541
565566
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