Misplaced Pages

NGC 819
NGC 819 (SDSS)
Observation data (J2000.0 epoch)
Constellation	Triangulum
Right ascension	02 08 34.40
Declination	+29° 14′ 03.00″
Redshift	0.021935
Heliocentric radial velocity	6576 ± 10 km/s
Distance	302 Mly
Apparent magnitude (V)	13.40
Apparent magnitude (B)	14.30
Characteristics
Type	S?
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 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

Supernova SN 2007hb was discovered in NGC 819 on August 24, 2007 by Nearby Supernova Factory. SN 2007hb had a magnitude of about 19.5 and was located at RA 02h08m34.0s, DEC +29d14m14s, J2000.0. It was classified as a type Ib/c supernova.

Supernova SN 2016hkn was discovered in NGC 819 on October 22, 2016 by Fabio Briganti. SN 2014bu had a magnitude of about 17.2 and was located at RA 02h08m34.2s, DEC +29d14m11s, J2000.0. It was classified as a type II supernova.

Supernova SN 2020mbe (type Ic, mag. 18.6) was discovered in NGC 819 on 10 January 2020.

See also

• List of NGC objects (1–1000)

References

1. ^ "NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved March 4, 2019.
2. ^ "Revised NGC Data for NGC 819". spider.seds.org. Retrieved March 4, 2019.
3. "NGC 819". Retrieved March 4, 2019.
4. ^ "Data for NGC 819". www.astronomy-mall.com. Retrieved March 4, 2019.
5. ^ "Transient Name Server (TNS): SN 2007hb". wis-tns.weizmann.ac.il. Retrieved March 4, 2019.
6. ^ "Transient Name Server (TNS): SN 2016hkn". wis-tns.weizmann.ac.il. Retrieved March 4, 2019.
7. "SN 2020mbe". Transient Name Server. IAU. Retrieved 5 September 2024.

External links

• NGC 819 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
• SEDS

v t e Constellation of Triangulum
List of stars in Triangulum Triangulum in Chinese astronomy
Stars	Bayer α (Mothallah) β γ δ ε ι Flamsteed 1 5 7 10 11 12 13 14 15 Variable R V X RW XX HR 490 523 564 HD 9446 13189 Other B324 HAT-P-38 (Horna) LSPM J0207+3331 M33-013406.63 M33 X-7 Romano's Star Ross 19 Var 83
Exoplanets HAT-P-38b (Hiisi) HD 9446 b c HD 13189 b
Nebulae 588 595 604
Galaxies	NGC Triangulum Galaxy 608 634 669 670 672 684 688 735 736 739 740 750 751 769 777 784 804 805 819 855 860 861 890 925 931 940 941 953 959 970 973 1060 Numbered I II Other Arp 166 RD1
Category

• Spiral galaxies
• Triangulum
• NGC objects
• Principal Galaxies Catalogue objects
• Astronomical objects discovered in 1865
• Discoveries by Heinrich Louis d'Arrest
• IRAS catalogue objects
• UGC objects