NGC 4002

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 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 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

References

1. "Results for object NGC 4002". NASA/IPAC Extragalactic Database. NASA and Caltech . Retrieved 2025-07-08.
2. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2025-07-08.
3. "New General Catalog Objects: NGC 4000 - 4049". cseligman.com. Retrieved 2025-07-08.
4. Tully, R. Brent (2015-04-28). "GALAXY GROUPS: A 2MASS CATALOG". The Astronomical Journal. 149 (5): 171. arXiv: 1503.03134 . doi:10.1088/0004-6256/149/5/171. ISSN   1538-3881.
5. Jaffe, W.; Gavazzi, G. (February 1986). "Radio continuum survey of the coma/A1367 supercluster. II. 1.5 GHz observations of 396 CGCG galaxies". The Astronomical Journal. 91: 204–216. doi:10.1086/114001. ISSN   0004-6256.
6. Gavazzi, G.; Savorgnan, G.; Fumagalli, Mattia (October 2011). "The complete census of optically selected AGNs in the Coma supercluster: the dependence of AGN activity on the local environment". Astronomy and Astrophysics. 534: A31. doi:10.1051/0004-6361/201117461. ISSN   0004-6361.
7. "NGC 4002". simbad.u-strasbg.fr. Retrieved 2025-07-08.
8. Arzoumanian, Zaven; Baker, Paul T.; Brazier, Adam; Brook, Paul R.; Burke-Spolaor, Sarah; Becsy, Bence; Charisi, Maria; Chatterjee, Shami; Cordes, James M.; Cornish, Neil J.; Crawford, Fronefield; Cromartie, H. Thankful; Decesar, Megan E.; Demorest, Paul B.; Dolch, Timothy (2021-06-01). "The NANOGrav 11 yr Data Set: Limits on Supermassive Black Hole Binaries in Galaxies within 500 Mpc". The Astrophysical Journal. 914 (2): 121. arXiv: 2101.02716 . Bibcode:2021ApJ...914..121A. doi: 10.3847/1538-4357/abfcd3 . ISSN   0004-637X.