NGC 846
| Galaxy NGC 846 / NGC 847 |
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|---|---|
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| AladinLite | |
| Constellation | Andromeda |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 12 m 12.3 s |
| declination | + 44 ° 34 ′ 06 ″ |
| Appearance | |
| Morphological type | SB (rs) off |
| Brightness (visual) | 12.3 mag |
| Brightness (B-band) | 13.1 mag |
| Angular expansion | 1.9 ′ × 1.7 ′ |
| Position angle | 140 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.017072 +/- 0.000037 |
| Radial velocity | 5118 ± 11 km / s |
|
Stroke distance v rad / H 0 |
(235 ± 16) x 10 6 ly (72.1 ± 5.0) Mpc |
| history | |
| discovery | Édouard Stephan |
| Discovery date | November 22, 1876 |
| Catalog names | |
| NGC 846/847 • UGC 1688 • PGC 8430 • CGCG 538-32 • MCG + 07-05-024 • IRAS 02090 + 4420 • 2MASX J02121230 + 4434060 • VV 791 • GC 5226 • Stephan VIII | |
NGC 846 = NGC 847 is a bar-spiral galaxy of the Hubble type SBab constellation Andromeda in the northern sky . It is estimated that 235 million light-years from the Milky Way away and has a diameter of about 130,000 light years together with. NGC 812 and PGC 8424 it forms the LGG 46 - galaxy group .
The object was on November 22, 1876 by Édouard Jean-Marie Stephan (listed as NGC 846 ); and discovered by Lewis Swift (as NGC 847 ) on November 30, 1885 .