| 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] |
![{\displaystyle {\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/4c0821bd80891e071c08e7c7ee8e022baedf522c)
Messier 3 (M3; also NGC 5272) is a globular cluster of stars in the northern constellation of Canes Venatici.
- ^ Cite error: The named reference
thompson_thompson2007was invoked but never defined (see the help page). - ^ Cite error: The named reference
hcob849_11was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
aj140_6_1830was invoked but never defined (see the help page). - ^ Cite error: The named reference
aj139_2_476was invoked but never defined (see the help page). - ^ Cite error: The named reference
aj144_5_126was invoked but never defined (see the help page). - ^ Cite error: The named reference
mnras406_3_2000was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
Broschewas invoked but never defined (see the help page). - ^ a b Cite error: The named reference
mnras404_3_1203was invoked but never defined (see the help page). - ^ "M 3". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2006-11-15.
{{cite web}}: CS1 maint: postscript (link)