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Messier Index/M18
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Messier 18 200px M18 photo from the w:2MASS project. J2000.0 II,3,p,n 18h 19.9m −17° 08′ 4.9 kly 1.5 kPc 7.5 9.0′ 9 ly 32 million years NGC 6613
Messier 18 or M18 (also designated NGC 6613) is an w:open cluster of w:stars in the w:constellation Sagittarius. It was discovered by w:Charles Messier in w:1764 and included in his list of w:comet-like objects. From the perspective of w:Earth, M18 is situated between the w:Omega Nebula (M17) and the w:Sagittarius Star Cloud (M24). Its age is estimated at 32 million years.
External links
Messier 18 Messier 18
Messier 18, SEDS Messier pages