Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  NGC 4145  ·  NGC 4151  ·  NGC 4156
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NGC 4151 and Friends, Ola Skarpen SkyEyE
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NGC 4151 and Friends

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NGC 4151 and Friends, Ola Skarpen SkyEyE
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NGC 4151 and Friends

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Description

Many small galaxies and also tidal tails and also background galaxies


NGC 4151 is an intermediate spiral seyfert galaxy with weak inner ring structure located 19 megaparsecs (62 million light-years) from Earth in the constellation Canes Venatici. The galaxy was first mentioned by William Herschel on March 17, 1787; it was one of the two Seyfert galaxies described in the paper which defined the term. It is one of the nearest galaxies to Earth to contain an actively growing supermassive black hole; it was speculated that the nucleus may host a binary black hole, with about 40 million and about 10 million solar masses respectively, orbiting with a 15.8-year period. This is, however, still a matter of active debate. Some astronomers nickname it the "Eye of Sauron" from its appearance.

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NGC 4151 and Friends, Ola Skarpen SkyEyE

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Cloudy Nights