NGC 662
| NGC 662 | |
|---|---|
 The spiral galaxy NGC 662. | |
| Observation data (J2000 epoch) | |
| Constellation | Andromeda |
| Right ascension | 01h 44m 35.45s[1] |
| Declination | +37° 41′ 44.8″[1] |
| Redshift | 0.018860[1] |
| Heliocentric radial velocity | 5654 ± 4 km/s[1] |
| Distance | 259.7 ± 18.2 Mly (79.61 ± 5.58 Mpc)[1] |
| Apparent magnitude (V) | 13.0[1] |
| Characteristics | |
| Type | S pec[1] |
| Size | ~63,000 ly (19.32 kpc) (estimated)[1] |
| Apparent size (V) | 0.8' x 0.5'[1] |
| Other designations | |
| PGC 6393, UGC 1220, MCG +06-04-060, 2MASX J01443544+3741447, IRAS 01416+3726[1] | |
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 Mpc (∼260 million light-years).[1] It was discovered by French astronomer Édouard Stephan on 22 November 1884.
According to the Simbad database, NGC 662 is a radio galaxy.[2] It features a broad HI line[3] and is classified a field galaxy, meaning it does not belong to the galaxy group nor a cluster and is therefore gravitationally isolated.[4]
Three supernovae have been observed in NGC 662: SN 2001dn (type Ia, mag. 15.5),[5] SN 2022ojo (type II-P, mag. 16.9),[6] and SN 2024pcw (type II, mag. 18.7).[7]
See also
[edit]References
[edit]- ^ a b c d e f g h i j k "NASA/IPAC Extragalactic Database". Results for NGC 662. Retrieved 23 July 2024.
- ^ SIMBAD database entry for NGC 662. Retrieved 23 July 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.
- ^ Transient Name Server entry for SN 2001dn. Retrieved 23 July 2024.
- ^ Transient Name Server entry for SN 2022ojo. Retrieved 23 July 2024.
- ^ Transient Name Server entry for SN 2024pcw. Retrieved 23 July 2024.
External links
[edit]
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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