NGC 819
Galaxy in the constellation Triangulum
From Wikipedia, the free encyclopedia
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]
Right ascension02h 08m 34.40s [1]
Declination+29° 14′ 03.00″ [1]
| 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 | |
Discovery
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
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]
