NGC 7637
| NGC 7637 | |
|---|---|
 NGC 7637 imaged by Legacy Surveys | |
| Observation data (J2000 epoch) | |
| Constellation | Octans |
| Right ascension | 23h 26m 27.6374s[1] |
| Declination | −81° 54′ 41.516″[1] |
| Redshift | 0.012402[1] |
| Heliocentric radial velocity | 3718 ± 3 km/s[1] |
| Distance | 178.5 ± 12.5 Mly (54.73 ± 3.83 Mpc)[1] |
| Apparent magnitude (V) | 13[1] |
| Characteristics | |
| Type | SA(r)c[1] |
| Size | ~162,500 ly (49.83 kpc) (estimated)[1] |
| Apparent size (V) | 2.1′ × 1.9′[1] |
| Other designations | |
| ESO 012- G 001, IRAS 23226-8211, 2MASX J23262765-8154417, PGC 71440[1] | |
NGC 7637 is a spiral galaxy in the constellation of Octans. Its velocity with respect to the cosmic microwave background is 3711 ± 3 km/s, which corresponds to a Hubble distance of 178.5 ± 12.5 Mly (54.73 ± 3.83 Mpc).[1] It was discovered by British astronomer John Herschel on 17 October 1835.[2]
Supernovae
Three supernovae have been observed in NGC 7637:
- SN 1992ao (type II, mag. 17) was discovered by Robert H. McNaught on 28 July 1992.[3][4]
- SN 2012ah (type Ia, mag. 14.8) was discovered by Stuart Parker on 21 February 2012.[5][6]
- SN 2022iwt (type II, mag. 16.825) was discovered by ATLAS on 29 April 2022.[7]
See also
References
- ^ a b c d e f g h i j k "Results for object NGC 7637". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 18 December 2024.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 7637". Celestial Atlas. Retrieved 18 December 2024.
- ^ McNaught, R. H.; Parker, Q. A.; Della Valle, M.; Gilmozzi, R. (1992). "Supernova 1992ao in NGC 7637". International Astronomical Union Circular (5573): 1. Bibcode:1992IAUC.5573....1M.
- ^ "SN 1992ao". Transient Name Server. IAU. Retrieved 18 December 2024.
- ^ Dennefeld, M.; Rajoelimanana, A.; Vaisanen, P.; Worters, H.; Tekola, A.; Uba, I.; Owayesy, F.; Tumwine, C.; Christopher, E.; Simpemba, P.; Catala, L.; Madhanpall, N.; Makhatini, S.; Mguda, Z.; Ramphul, R.; Skelton, P.; Viljoen, D.; Wilson, S. (2012). "Supernova 2012ah in NGC 7637 = PSN J23255963-8154333". Central Bureau Electronic Telegrams. 3028: 1. Bibcode:2012CBET.3028....1D.
- ^ "SN 2012ah". Transient Name Server. IAU. Retrieved 18 December 2024.
- ^ "SN 2022iwt". Transient Name Server. IAU. Retrieved 18 December 2024.
External links
Media related to NGC 7637 at Wikimedia Commons- NGC 7637 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
