Messier 18, also known as M18, NGC 6613 or the Black Swan Cluster, is an open cluster of stars in the constellation Sagittarius. It was discovered by Charles Messier in 1764 and included in his list of comet-like objects, and from Earth it appears between the Omega Nebula (M17) and the Small Sagittarius Star Cloud (M24).
Facts
Classification
Constellation Discovery Year In the Other Atlases
In Constellation
Also in Divinity Atlas: the constellation this subject lies in.
Sources
1. Wikipedia (space and spaceflight articles)
Wikimedia Foundation
2. Wikidata: Messier 18
Messier 18 (Wikipedia)
Messier 18, Wikipedia - lead section, catalogue classification
Messier 18 or M18, also designated NGC 6613 and sometimes known as the Black Swan Cluster, is an open cluster of stars in the constellation Sagittarius.
Messier 18, Wikipedia - lead section, constellation
Messier 18 or M18, also designated NGC 6613 and sometimes known as the Black Swan Cluster, is an open cluster of stars in the constellation Sagittarius.
In Group: Open Clusters, Lead sentence
Messier 18 or M18, also designated NGC 6613 and sometimes known as the Black Swan Cluster, is an open cluster of stars in the constellation Sagittarius.
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