Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  IC 4701  ·  M 17  ·  M 18  ·  NGC 6613  ·  NGC 6618  ·  Omega nebula
Messier 18 or M18 between Messier 17 or M17 ( Omega Nebula) and Sagittarius Star Cloud (M24)., Stephen Harris
Messier 18 or M18 between Messier 17 or M17 ( Omega Nebula) and Sagittarius Star Cloud (M24).
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Messier 18 or M18 between Messier 17 or M17 ( Omega Nebula) and Sagittarius Star Cloud (M24).

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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 discovered by Charles 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 Sagittarius Star Cloud (M24). Its age is estimated at 32 million years. It is 4,900 light-years away.

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Messier 18 or M18 between Messier 17 or M17 ( Omega Nebula) and Sagittarius Star Cloud (M24)., Stephen Harris