NGC 662 explained
| NGC 662 |
| Constellation Name: | Andromeda |
| Epoch: | J2000 |
| Type: | S pec[1] |
| Dist Ly: | NaNMpc |
| Z: | 0.018860 |
| H Radial V: | 5654 ± 4 km/s |
| Appmag V: | 13.0 |
| Size V: | 0.8' x 0.5' |
| Size: | ~19.32kpc (estimated) |
NGC662 is a spiral galaxy in the constellation of Andromeda. Its velocity with respect to the cosmic microwave background is 5,397 ± 18km/s, which corresponds to a Hubble distance of 79.6 ± 5.6Mpc (∼260million light-years). It was discovered by French astronomer Édouard Stephan on 22 November 1884.
According to the Simbad database, NGC662 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 NGC662: SN2001dn (type Ia, mag.15.5),[5] SN2022ojo (typeII-P, mag.16.9),[6] and SN2024pcw (typeII, mag.18.7).[7]
See also
Notes and References
- Web site: NASA/IPAC Extragalactic Database . Results for NGC 662 . 23 July 2024.
- https://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC+662 SIMBAD database entry for NGC 662.
- 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 . 10.1086/118337 . 1997AJ....113.1197H . 0004-6256.
- Karachentseva . V. E. . 1973-01-01 . The Catalogue of Isolated Galaxies . Astrofizicheskie Issledovaniia Izvestiya Spetsial'noj Astrofizicheskoj Observatorii . 8 . 3–49. 1973AISAO...8....3K .
- https://www.wis-tns.org/object/2001dn Transient Name Server entry for SN2001dn.
- https://www.wis-tns.org/object/2022ojo Transient Name Server entry for SN2022ojo.
- https://www.wis-tns.org/object/2024pcw Transient Name Server entry for SN2024pcw.
