Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  M 18  ·  NGC 6613
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M18 Open Cluster, Dean Glace
M18 Open Cluster
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M18 Open Cluster

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M18 Open Cluster, Dean Glace
M18 Open Cluster
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M18 Open Cluster

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Description

Messier 18 or M18, also designated NGC 6613, is an open cluster of stars in the constellation Sagittarius. It was dCharles Messier in 1764 and included in his list of comet -like objects. From the perspective of Earth, M18 is situated between the Omega Nebula (M17) and the Small Sagittarius Star Cloud (M24).
Apparent magnitude (V): 7.5
Distance: 4.23 kly (1.296 kpc)
Mass: 186+161, −86 M☉
Radius: 26.2 light-years

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M18 Open Cluster, Dean Glace