NGC 819

NGC 819
NGC 819 (SDSS)
Observation data (J2000.0 epoch)
ConstellationTriangulum
Right ascension02h 08m 34.40s
Declination+29° 14′ 03.00″
Redshift0.021935
Heliocentric radial velocity6576 ± 10 km/s
Distance302 Mly
Apparent magnitude (V)13.40
Apparent magnitude (B)14.30
Characteristics
TypeS?
Apparent size (V)0.6 x 0.4
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. It forms a visual pair with the galaxy NGC 816 [fr] 5.7' WNW.

Discovery

NGC 819 was discovered by German astronomer Heinrich Louis d'Arrest on September 20, 1865 with the 11-inch refractor at Copenhagen. Édouard Stephan independently found the galaxy again on September 15, 1871 with the 31" reflector at Marseille Observatory.

Supernovae

Four supernovae have been observed in NGC 819:

See also

References

  1. 1 2 3 4 5 6 7 8 "NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved March 4, 2019.
  2. 1 2 3 "Revised NGC Data for NGC 819". spider.seds.org. Retrieved March 4, 2019.
  3. ↑ "NGC 819". Retrieved March 4, 2019.
  4. 1 2 3 "Data for NGC 819". www.astronomy-mall.com. Retrieved March 4, 2019.
  5. ↑ 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.
  6. 1 2 "SN 2007hb". Transient Name Server. IAU. Retrieved 8 March 2026.
  7. 1 2 "SN 2016hkn". Transient Name Server. IAU. Retrieved 8 March 2026.
  8. ↑ "SN 2020mbe". Transient Name Server. IAU. Retrieved 5 September 2024.
  9. ↑ "SN 2026fau". Transient Name Server. IAU. Retrieved 12 March 2026.