NGC 846
Galaxy NGC 846 / NGC 847 |
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AladinLite | |
Constellation | Andromeda |
Position equinox : J2000.0 , epoch : J2000.0 |
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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 .