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Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a grand design spiral galaxy about 12 million light-years away in the constellation Ursa Major. It has a D 25 isophotal diameter of 29.44 kiloparsecs (96,000 light-years ).
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 Messier catalogue is one of the most famous lists of astronomical objects, and many objects on the list are still referenced by their Messier numbers. [1] The catalogue includes most of the astronomical deep-sky objects that can be easily observed from Earth's Northern Hemisphere; many Messier objects are popular targets for amateur ...
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It is a member of the M81 Group [4] and lies 1° 20 ′ to the southwest of Messier 81. [11] The projected separation of this galaxy from the M81 Group is 190 kpc. [6] The morphological classification of this galaxy is SAa, [7] which matches an unbarred spiral galaxy (SA) with very tightly-wound spiral arms (a). The actual visual form of the ...
M81 or M-81 may refer to: M-81 (Michigan highway), a state highway in Michigan; McDonnell-Douglas MD81; Messier 81, a spiral galaxy in the constellation Ursa Major, also known as NGC 3031 or Bode's Galaxy; U.S. Woodland, a camouflage pattern colloquially known as "M81"
Messier 81, also known as NGC 3031 or Bode's Galaxy, is a spiral galaxy about 12 million light-years from Earth in the constellation Ursa Major. Due to its relative proximity, large size and active galactic nucleus , Messier 81 has been studied extensively by professional astronomers .