NGC 5012

NGC 5012
NGC 5012 imaged by SDSS
Observation data (J2000 epoch)
ConstellationComa Berenices
Right ascension13h 11m 37.0480s
Declination+22° 54′ 56.219″
Redshift0.008694±0.00000638
Heliocentric radial velocity2,606±2 km/s
Distance122.14 ± 4.22 Mly (37.447 ± 1.295 Mpc)
Group or clusterNGC 5012 group (LGG 336)
Apparent magnitude (V)12.8g
Characteristics
TypeSAB(rs)c
Size~105,200 ly (32.26 kpc) (estimated)
Apparent size (V)2.90′ × 1.02′
Other designations
IRAS 13091+2310, 2MASX J13113705+2254556, UGC 8270, MCG +04-31-012, PGC 45795, CGCG 130-016

NGC 5012 is an intermediate spiral galaxy in the constellation of Coma Berenices. Its velocity with respect to the cosmic microwave background is 2,883±19 km/s, which corresponds to a Hubble distance of 138.7 ± 9.8 Mly (42.52 ± 2.99 Mpc). However, 17 non-redshift measurements give a closer mean distance of 122.14 ± 4.22 Mly (37.447 ± 1.295 Mpc). It was discovered by German-British astronomer William Herschel on 10 April 1785.

NGC 5012 is a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.

NGC 5012 group

NGC 5012 is the largest and brightest member of a trio of galaxies. The other two galaxies in the NGC 5012 group (also known as LGG 336) are NGC 5016 [fr] and NGC 5012A [de].

Supernovae

Two supernovae have been observed in NGC 5012:

See also

References

  1. 1 2 3 4 5 6 7 8 9 10 11 "Results for object NGC 5012". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 21 December 2025.
  2. ↑ "Distance Results for NGC 5012". NASA/IPAC Extragalactic Database. NASA. Retrieved 21 December 2025.
  3. ↑ Herschel, William (1786). "Catalogue of One Thousand New Nebulae and Clusters of Stars" (PDF). Philosophical Transactions of the Royal Society of London. 76: 457–499. Bibcode:1786RSPT...76..457H. doi:10.1098/rstl.1786.0027.
  4. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 5012". Celestial Atlas. Retrieved 21 December 2025.
  5. ↑ Toba, Y.; Oyabu, S.; Matsuhara, H.; Malkan, M. A.; Gandhi, P.; Nakagawa, T.; Isobe, N.; Shirahata, M.; Oi, N.; Ohyama, Y.; Takita, S.; Yamauchi, C.; Yano, K. (2014). "Luminosity and Redshift Dependence of the Covering Factor of Active Galactic Nuclei viewed with WISE and Sloan Digital Sky Survey". The Astrophysical Journal. 788 (1): 45. arXiv:1404.4937. Bibcode:2014ApJ...788...45T. doi:10.1088/0004-637X/788/1/45.
  6. ↑ "NGC 5012". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 December 2025.
  7. ↑ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.
  8. ↑ "LGG 336". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 December 2025.
  9. ↑ Nakano, S.; Aoki, M. (1997). "Supernova 1997eg in NGC 5012". International Astronomical Union Circular (6790): 1. Bibcode:1997IAUC.6790....1N.
  10. ↑ "SN 1997eg". Transient Name Server. IAU. Retrieved 21 December 2025.
  11. ↑ "SN 2020kyg". Transient Name Server. IAU. Retrieved 21 December 2025.