NGC 4002

NGC 4002 is a lenticular galaxy located 310 million light-years away^[2] in the constellation Leo. It was discovered on April 10, 1785, by astronomer William Herschel.^[3] NGC 4002 forms a pair with the galaxy NGC 4003 known as [T2015] nest 102886,^[4] and is part of the Coma Supercluster.^[5][6]

NGC 4002
SDSS image of NGC 4002.
Observation data (J2000 epoch)
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 a quasar candidate according to Simbad,^[7] and is host to a supermassive black hole with an estimated mass of 9 × 10⁸ M_☉.^[8]

See also

• Coma Supercluster