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The Ursa Major Cluster (Ursa Major I Cluster, UMa I ClG) is a spiral-rich galaxy cluster of the Virgo Supercluster. Some of its largest members are
NGC 3631 NGC 3631 is a spiral galaxy located in the constellation Ursa Major. It is located at a distance of circa 35 million light years from Earth, which, given its apparent dimensions, means that NGC 3631 is about 60,000 light years across. It was disco ...
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NGC 3953 NGC 3953 is a barred spiral galaxy located in the constellation Ursa Major. The galaxy is known to exhibit an inner ring structure that encircles the bar. NGC 3953 is a member of the M109 Group, a large group of galaxies located within the cons ...
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M109 The M109 is an American 155 mm turreted Self-propelled artillery, self-propelled howitzer, first introduced in the early 1960s to replace the M44 self propelled howitzer, M44. It has been upgraded a number of times, most recently to the M109A7. T ...
on North ( M109 Group) and
NGC 3726 NGC 3726 is a spiral galaxy located in the constellation Ursa Major. It is located at a distance of circa 45 million light years from Earth, which, given its apparent dimensions, means that NGC 3726 is about 85,000 light years across. It was disco ...
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NGC 3938 NGC 3938 is an unbarred spiral galaxy in the Ursa Major constellation. It was discovered on 6 February 1788 by William Herschel. It is one of the brightest spiral galaxies in the Ursa Major South galaxy group and is roughly 67,000 light years in ...
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NGC 4051 NGC 4051 is an intermediate spiral galaxy in the constellation of Ursa Major. It was discovered on 6 February 1788 by John Herschel. NGC 4051 contains a supermassive black hole with a mass of 1.73 million . This galaxy was studied by the Multi ...
on South. The Ursa Major cluster is located at a distance of 18.6 mega parsecs (60 million
light-year A light-year, alternatively spelled light year, is a large unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometers (), or 5.88 trillion miles ().One trillion here is taken to be 1012 ...
s) and contains about 30% of the light emitted but only 5% of the mass of the nearby Virgo Cluster.


External links

* Galaxy clusters Virgo Supercluster Ursa Major (constellation) {{galaxy-cluster-stub