NGC 804
Galaxy NGC 804 / IC 1773 |
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NGC 804 with LEDA 212904 (ul) SDSS image | |
AladinLite | |
Constellation | triangle |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 02 h 04 m 02.1 s |
declination | + 30 ° 49 ′ 58 ″ |
Appearance | |
Morphological type | S0 |
Brightness (visual) | 13.7 mag |
Brightness (B-band) | 14.7 mag |
Angular expansion | 1.4 ′ × 0.3 ′ |
Position angle | 7 ° |
Surface brightness | 12.6 mag / arcmin² |
Physical data | |
Affiliation | NGC 777 group LGG 42 |
Redshift | 0.017575 ± 0.000093 |
Radial velocity | 5269 ± 28 km / s |
Stroke distance v rad / H 0 |
(241 ± 17) x 10 6 ly (73.8 ± 5.2) Mpc |
history | |
discovery | Lewis A. Swift |
Discovery date | September 7, 1885 |
Catalog names | |
NGC 804 • IC 1773 • UGC 1557 • PGC 7873 • CGCG 503-079 / 504-001 • MCG + 05-05-049 • 2MASX J02040210 + 3049581 • GALEX ASC J020402.04 + 304957.0 • LDCE 129 NED018 |
NGC 804 = IC 1773 is a lens-shaped galaxy of the Hubble-type S0 in the constellation Triangle in the northern sky . It is an estimated 241 million light years away from the Milky Way and has a diameter of around 100,000 ly.
In the same area of the sky are the galaxies NGC 778 and IC 200 , among others .
The object was discovered on September 7, 1885 by the American astronomer Lewis A. Swift (as NGC 804 ) and on December 24, 1897 by the French astronomer Guillaume Bigourdan (as IC 1773 ).
Web links
Commons : NGC 804 - collection of images, videos, and audio files
- SIMBAD Astronomical Database
- Auke Slotegraaf: NGC 804. Deep Sky Observer's Companion, accessed on February 22, 2016 (English).
- NGC 804. DSO Browser, accessed February 22, 2016 .
Individual evidence
- ^ Aladin Lite
- ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b c d e f SEDS : NGC 804
- ^ VizieR
- ^ Courtney Seligman: New General Catalog Objects: NGC 800 - 849. Retrieved February 22, 2016 (English).
Attention: The sorting key "NGC 0804" overwrites the previously used key "IC1773".