Messier 3 | |
---|---|
![]() Globular cluster Messier 3 in Canes Venatici | |
Observation data (J2000 epoch) | |
Class | VI[1][2] |
Constellation | Canes Venatici |
Right ascension | 13h 42m 11.62s[3] |
Declination | +28° 22′ 38.2″[3] |
Distance | 33.9 kly (10.4 kpc)[4] |
Apparent magnitude (V) | 6.39[5] |
Apparent dimensions (V) | 18′.0 |
Physical characteristics | |
Absolute magnitude | -8.93 |
Mass | 4.5×105[6] M☉ |
Radius | 103.0 pc (335.9 ly)[7] |
Tidal radius | 113 pc (370 ly)[mean][7] |
Metallicity | = –1.34[8] dex |
Estimated age | 11.39 Gyr[8] |
Other designations | NGC 5272[9] |
Messier 3 (M3; also NGC 5272) is a globular cluster of stars in the northern constellation of Canes Venatici.
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