M81 Group
Galaxy group in Ursa Major and Camelopardalis / From Wikipedia, the free encyclopedia
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The M81 Group is a galaxy group in the constellations Ursa Major and Camelopardalis that includes the galaxies Messier 81 and Messier 82, as well as several other galaxies with high apparent brightnesses.[1] The approximate center of the group is located at a distance of 3.6 Mpc, making it one of the nearest groups to the Local Group.[1] The group is estimated to have a total mass of (1.03 ± 0.17)×1012M☉.[2] The M81 Group, the Local Group, and other nearby groups all lie within the Virgo Supercluster (i.e. the Local Supercluster).[3]
Galaxy group in Ursa Major and Camelopardalis
| M81 Group | |
|---|---|
| |
| Observation data (Epoch J2000) | |
| Constellation(s) | Ursa Major/Camelopardalis |
| Brightest member | M81[1] (pictured) |
| Number of galaxies | 34[1] |
| Other designations | |
| NGC 3031 Group | |
| See also: Galaxy group, Galaxy cluster, List of galaxy groups and clusters | |