 | This article relies largely or entirely on a single source. (December 2025) |
| NGC 809 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Constellation | Cetus |
| Right ascension | 02h 04m 18.97s[1] |
| Declination | −08° 44′ 07.08″[1] |
| Redshift | 0.017812[1] |
| Heliocentric radial velocity | 5,340 km/s[1] |
| Distance | 261 Mly |
| Characteristics | |
| Type | (R)S0^+?[1] |
| Size | ~108,500 ly (33.27 kpc) (estimated)[1] |
| Other designations | |
| MCG -02-06-023, PGC 7889, 6dF J0204190-084407[1] | |
NGC 809 is a lenticular galaxy located in the constellation Cetus about 249 million light-years away from the Milky Way.[2] The redshift of the galaxy is (z) 0.017[1] and it was first discovered by the American astronomer named Lewis Swift in November 1886.[3]
Supernovae
[edit]Two supernovae have been observed in NGC 809:
- SN 2006ef (Type Ia, mag. 15.6) was discovered by the Lick Observatory Supernova Search (LOSS) on 18 August 2006.[4][5]
- SN 2025yn (Type II, mag. 18.978) was discovered by ATLAS on 21 January 2025.[6]
References
[edit]- ^ a b c d e f g h "NED Search results for NGC 809". NASA/IPAC Extragalactic Database. Retrieved 2025-12-30.
- ^ "New General Catalog Objects: NGC 800 - 849". Retrieved 29 December 2025.
- ^ "New General Catalog Objects: NGC 800 - 849". cseligman.com. Retrieved 2025-12-30.
- ^ Puckett, T.; Peoples, M.; Joubert, N.; Madison, D. R.; Mostardi, R.; Khandrika, H.; Li, W.; Foley, R. J. (2006). "Supernovae 2006ed-2006en". International Astronomical Union Circular (8741): 1. Bibcode:2006IAUC.8741....1P.
- ^ "SN 2006ef". Transient Name Server. IAU. Retrieved 29 December 2025.
- ^ "SN 2025yn". Transient Name Server. IAU. Retrieved 29 December 2025.