NGC 662
NGC 662 is a spiral galaxy in the constellation of Andromeda. Its velocity with respect to the cosmic microwave background is 5,397 ± 18 km/s, which corresponds to a Hubble distance of 79.6 ± 5.6 Mpc (∼260 million light-years). It was discovered by French astronomer Édouard Stephan on 22 November 1884.
According to the Simbad database, NGC 662 is a radio galaxy. It features a broad HI line and is classified a field galaxy, meaning it does not belong to the galaxy group nor a cluster and is therefore gravitationally isolated.
Supernovae
Three supernovae have been observed in NGC 662:
- SN 2001dn (type Ia, mag. 15.5) was discovered by Tom Boles on 14 August 2001.
- SN 2022ojo (type II-P, mag. 16.938) was discovered by ATLAS on 5 July 2022.
- SN 2024pcw (type II, mag. 18.724) was discovered by ATLAS on 8 July 2024.
See also
References
- ^ "Results for object NGC 662". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 23 July 2024.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 662". Celestial Atlas. Retrieved 13 December 2024.
- ^ "NGC 662". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 December 2024.
- ^ Haynes, Martha P.; Giovanelli, Riccardo; Herter, Terry; Vogt, Nicole P.; Freudling, Wolfram; Maia, M. A. G.; Salzer, J. J.; Wegner, G. (1997-04-01). "21 CM H1 Line Spectra of Galaxies in Nearby Clusters". The Astronomical Journal. 113: 1197–1211. Bibcode:1997AJ....113.1197H. doi:10.1086/118337. ISSN 0004-6256.
- ^ Karachentseva, V. E. (1973-01-01). "The Catalogue of Isolated Galaxies". Astrofizicheskie Issledovaniia Izvestiya Spetsial'noj Astrofizicheskoj Observatorii. 8: 3–49. Bibcode:1973AISAO...8....3K.
- ^ Hurst, G. M.; Boles, T.; Armstrong, M. (2001). "Supernova 2001dn in NGC 662". International Astronomical Union Circular (7681): 1. Bibcode:2001IAUC.7681....1H.
- ^ "SN 2001dn". Transient Name Server. IAU. Retrieved 13 December 2024.
- ^ "SN 2022ojo". Transient Name Server. IAU. Retrieved 13 December 2024.
- ^ "SN 2024pcw". Transient Name Server. IAU. Retrieved 13 December 2024.
External links
Media related to NGC 662 at Wikimedia Commons- NGC 662 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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