NGC 819
(Redirected from UGC 1632)
| NGC 819 | |
|---|---|
 NGC 819 (SDSS) | |
| Observation data (J2000.0 epoch) | |
| Constellation | Triangulum |
| Right ascension | 02h 08m 34.40s [1] |
| Declination | +29° 14′ 03.00″ [1] |
| Redshift | 0.021935 [1] |
| Heliocentric radial velocity | 6576 ± 10 km/s [1] |
| Distance | 302 Mly |
| Apparent magnitude (V) | 13.40 [2] |
| Apparent magnitude (B) | 14.30 [2] |
| Characteristics | |
| Type | S? [1] |
| Apparent size (V) | 0.6 x 0.4 [2] |
| Other designations | |
| IRAS 02056+2859, UGC 1632, PGC 8174, CGCG 504-017 | |
NGC 819 is a spiral galaxy approximately 302 million light-years away from Earth in the constellation of Triangulum.[1][3] It forms a visual pair with the galaxy NGC 816 5.7' WNW.[4]
Discovery
[edit]NGC 819 was discovered by German astronomer Heinrich Louis d'Arrest on September 20, 1865 with the 11-inch refractor at Copenhagen.[4] Édouard Stephan independently found the galaxy again on September 15, 1871 with the 31" reflector at Marseille Observatory.[4]
Supernovae
[edit]Four supernovae have been observed in NGC 819:
- SN 2007hb (Type Ib/c, mag. 19.5) was discovered by Nearby Supernova Factory on August 24, 2007.[5][6] It was located at RA 02h 08m 34.0s, DEC +29° 14′ 14″, J2000.0.[6][1]
- SN 2016hkn (Type II, mag. 17.2) was discovered by Paolo Campaner on October 22, 2016.[7] It was located at RA 02h 08m 34.23s, DEC +29° 14′ 11.1″.[7][1]
- SN 2020mbe (Type Ic, mag. 18.6) was discovered by Gaia Photometric Science Alerts on January 10, 2020.[8]
- SN 2026fau (Type II, mag. 18.5942) was discovered by the Zwicky Transient Facility on March 7, 2026.[9]
See also
[edit]References
[edit]- 1 2 3 4 5 6 7 8 "NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved March 4, 2019.
- 1 2 3 "Revised NGC Data for NGC 819". spider.seds.org. Retrieved March 4, 2019.
- ↑ "NGC 819". Retrieved March 4, 2019.
- 1 2 3 "Data for NGC 819". www.astronomy-mall.com. Retrieved March 4, 2019.
- ↑ Rigaudier, G.; Pecontal, E.; Buton, C.; Copin, Y.; Gangler, E.; Smadja, G.; Tao, C.; Antilogus, P.; Pain, R.; Pereira, R.; Wu, C.; Aldering, G.; Aragon, C.; Bailey, S.; Bongard, S.; Childress, M.; Loken, S.; Nugent, P.; Perlmutter, S.; Runge, K.; Thomas, R. C.; Weaver, B. A.; Baltay, C.; Bauer, A.; Rabinowitz, D.; Scalzo, R.; Birchall, D.; Cough, J.; Holtzman, J. (2007). "Supernovae 2007gx, 2007gy, 2007gz, 2007ha, 2007hb, 2007hc". Central Bureau Electronic Telegrams (1043): 1. Bibcode:2007CBET.1043....1R.
- 1 2 "SN 2007hb". Transient Name Server. IAU. Retrieved 8 March 2026.
- 1 2 "SN 2016hkn". Transient Name Server. IAU. Retrieved 8 March 2026.
- ↑ "SN 2020mbe". Transient Name Server. IAU. Retrieved 5 September 2024.
- ↑ "SN 2026fau". Transient Name Server. IAU. Retrieved 12 March 2026.
External links
[edit]
Wikimedia Commons has media related to NGC 819.
- NGC 819 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- SEDS
