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NGC 4002

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NGC 4002
SDSS image of NGC 4002.
Observation data (J2000 epoch)
ConstellationLeo
Right ascension11h 57m 59.3s[1]
Declination23° 12′ 07″[1]
Redshift0.021959[1]
Heliocentric radial velocity6583 km/s[1]
Distance310 Mly (94 Mpc)[1]
Apparent magnitude (V)14.96[1]
Absolute magnitude (B)-22.76[1]
Characteristics
TypeS0-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

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References

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  1. ^ a b c d e f g h i j k "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.
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