Messier 107

Messier 107
Messier 107
	M107 from Hubble Space Telescope; 3.5′ view
Observation data (J2000 epoch)
Class	X
Right ascension	16h 32m 31.86s
Declination	–13° 03′ 13.6″
Distance	20.9 kly (6.4 kpc)
Apparent magnitude (V)	7.9
Apparent dimensions (V)	10′
Physical characteristics
Mass	1.82×105 M☉
Radius	30 ly
Metallicity	= –0.95 dex
Estimated age	13.95 Gyr
Other designations	C 1629-129, GCl 44, M 107, NGC 6171
	See also: Globular cluster, List of globular clusters

Messier 107 or M107, also known as NGC 6171 or the Crucifix Cluster, is a very loose globular cluster in a very mildly southern part of the sky close to the equator in Ophiuchus, and is the last such object in the Messier Catalogue.

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^ "Messier 107". SEDS Messier Catalog. Retrieved 30 April 2022.
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^ From trigonometry: distance × sin( diameter_angle / 2 ) = 39.5 ly. radius
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