NGC 7012
Galaxy in the constellation Microscopium
From Wikipedia, the free encyclopedia
NGC 7012 is a large, bright[2] elliptical galaxy located about 380 million light-years away from Earth in the constellation Microscopium.[3][4] NGC 7012 was discovered by astronomer John Herschel on July 1, 1834.[5] NGC 7012 is host to a supermassive black hole with an estimated mass of 4.5 billion M☉.[6] NGC 7012 is very large galaxy, with an estimated diameter of nearly 550,000 light years.[4]
| NGC 7012 | |
|---|---|
In this picture by the legacy surveys, NGC 7012 is surrounded by smaller galaxies. The star TYC 7977-850-1 is also visible at the lower right. | |
| Observation data (J2000 epoch) | |
| Constellation | Microscopium |
| Right ascension | 21h 06m 45.5s[1] |
| Declination | −44° 48′ 53″[1] |
| Redshift | 0.029347[1] |
| Heliocentric radial velocity | 8,798 km/s[1] |
| Distance | 380 Mly (117 Mpc)[1] |
| Apparent magnitude (V) | 13.65[1] |
| Absolute magnitude (B) | -23.53 ± 0.51[1] |
| Characteristics | |
| Type | cD4 pec[1] |
| Size | ~540,600 ly (165.75 kpc) (estimated)[1] |
| Apparent size (V) | 2.5 x 1.4[1] |
| Other designations | |
| ESO 286-51, AM 2103-450, PGC 66116[1] | |
Abell S0921
NGC 7012 is the brightest member in the center of a small compact group of interacting galaxies[7] known as Abell S0921.[8] Due to it also being the dominant member of the group, NGC 7012 is classified as a Cd galaxy.[9] The group has about seven major galaxies with many other more distant, fainter galaxies that are probably also associated.[2]