| NGC 5012 | |
|---|---|
 NGC 5012 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 13h 11m 37.0480s[1] |
| Declination | +22° 54′ 56.219″[1] |
| Redshift | 0.008694±0.00000638[1] |
| Heliocentric radial velocity | 2,606±2 km/s[1] |
| Distance | 122.14 ± 4.22 Mly (37.447 ± 1.295 Mpc)[1] |
| Group or cluster | NGC 5012 group (LGG 336) |
| Apparent magnitude (V) | 12.8g[1] |
| Characteristics | |
| Type | SAB(rs)c[1] |
| Size | ~105,200 ly (32.26 kpc) (estimated)[1] |
| Apparent size (V) | 2.90′ × 1.02′[1] |
| Other designations | |
| IRAS 13091+2310, 2MASX J13113705+2254556, UGC 8270, MCG +04-31-012, PGC 45795, CGCG 130-016[1] | |
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).[1] However, 17 non-redshift measurements give a closer mean distance of 122.14 ± 4.22 Mly (37.447 ± 1.295 Mpc).[2] It was discovered by German-British astronomer William Herschel on 10 April 1785.[3][4]
NGC 5012 is a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.[5][6]
NGC 5012 group
[edit]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 and NGC 5012A.[7][8]
Supernovae
[edit]Two supernovae have been observed in NGC 5012:
- SN 1997eg (Type IIn, mag. 15.6) was discovered by Japanese amateur astronomer Masakatsu Aoki on 4 December 1997.[9][10]
- SN 2020kyg (Type Iax[02cx-like], mag. 19.79) was discovered by ATLAS on 24 May 2020.[11]
See also
[edit]References
[edit]- ^ a b c d e f g h i j k "Results for object NGC 5012". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 21 December 2025.
- ^ "Distance Results for NGC 5012". NASA/IPAC Extragalactic Database. NASA. Retrieved 21 December 2025.
- ^ 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.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 5012". Celestial Atlas. Retrieved 21 December 2025.
- ^ 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.
- ^ "NGC 5012". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 December 2025.
- ^ 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.
- ^ "LGG 336". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 December 2025.
- ^ Nakano, S.; Aoki, M. (1997). "Supernova 1997eg in NGC 5012". International Astronomical Union Circular (6790): 1. Bibcode:1997IAUC.6790....1N.
- ^ "SN 1997eg". Transient Name Server. IAU. Retrieved 21 December 2025.
- ^ "SN 2020kyg". Transient Name Server. IAU. Retrieved 21 December 2025.
External links
[edit]
Media related to NGC 5012 at Wikimedia Commons- NGC 5012 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
