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 Solar mass|. This galaxy was studied by the Multicolor Active Galactic Nuclei Monitoring 2m telescope. Several supernovae have been discovered in NGC 4051: SN 1983I, SN 2010br, and SN 2003ie.
The galaxy is a Seyfert galaxy that emits bright X-rays. However, in early 1998 the X-ray emission ceased as observed in by the Beppo-SAX satellite.
NGC 4051 is a member of the Ursa Major Cluster.Gallery
