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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]
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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 .
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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Holmberg IX is a dwarf irregular galaxy and a satellite galaxy of M81, located in the constellation of Ursa Major.It is of the Magellanic type of Galaxy as it is similar to the Small Magellanic Cloud, neighbour galaxy to Milky Way Galaxy. [3]
SN 1993J is a supernova observed in Bode's Galaxy.It was discovered on 28 March 1993 by F. Garcia in Spain. [3] At the time, it was the second-brightest type II supernova observed in the twentieth century behind SN 1987A, [4] peaking at a visible apparent magnitude of 10.7 on March 30, with a second peak of 10.86 on April 18.