Messier 3 information

Messier 3
Messier 3
	Globular cluster Messier 3 in Canes Venatici
Observation data (J2000 epoch)
Class	VI
Constellation	Canes Venatici
Right ascension	13h 42m 11.62s
Declination	+28° 22′ 38.2″
Distance	33.9 kly (10.4 kpc)
Apparent magnitude (V)	6.39
Apparent dimensions (V)	18′.0
Physical characteristics
Absolute magnitude	-8.93
Mass	4.5×105 M☉
Radius	103.0 pc (335.9 ly)
Tidal radius	113 pc (370 ly)[mean]
Metallicity	= –1.34 dex
Estimated age	11.39 Gyr
Other designations	NGC 5272
	See also: Globular cluster, List of globular clusters

Messier 3 (M3; also NGC 5272) is a globular cluster of stars in the northern constellation of Canes Venatici.

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^ "M 3". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2006-11-15.{{cite web}}: CS1 maint: postscript (link)

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