| NGC 4002 | |
|---|---|
 SDSS image of NGC 4002. | |
| Observation data (J2000epoch) | |
| Constellation | Leo |
| Right ascension | 11h 57m 59.3s[1] |
| Declination | 23° 12′ 07″[1] |
| Redshift | 0.021959[1] |
| Heliocentric radial velocity | 6583 km/s[1] |
| Distance | 310 Mly (94 Mpc)[1] |
| Apparent magnitude (V) | 14.96[1] |
| Absolute magnitude (B) | -22.76[1] |
| Characteristics | |
| Type | S0-a[1] |
| Size | ~155,300 ly (47.62 kpc) (estimated)[1] |
| Apparent size (V) | 0.8′ × 0.4′[1] |
| Other designations | |
| CGCG 127-116, MCG +04-28-104, PGC 037635[1] | |
NGC 4002 is alenticular galaxy located 310 millionlight-years away[2] in theconstellationLeo. It was discovered on April 10, 1785, by astronomerWilliam Herschel.[3] NGC 4002 forms a pair with the galaxyNGC 4003 known as [T2015] nest 102886,[4] and is part of theComa Supercluster.[5][6]
NGC 4002 is aquasar candidate according toSimbad,[7] and is host to asupermassive black hole with an estimated mass of 9 × 108M☉.[8]
