NGC 3931
| Galaxy NGC 3931 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Big Bear |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 11 h 51 m 13.4 s |
| declination | + 52 ° 00 ′ 03 ″ |
| Appearance | |
| Morphological type | SA0- |
| Brightness (visual) | 13.9 likes |
| Brightness (B-band) | 14.9 mag |
| Angular expansion | 1.1 ′ × 0.9 ′ |
| Position angle | 160 ° |
| Surface brightness | 14.0 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 258 |
| Redshift | 0.002792 +/- 0.000037 |
| Radial velocity | 837 +/- 11 km / s |
|
Stroke distance v rad / H 0 |
(40 ± 3) x 10 6 ly (12.4 ± 0.9) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 12, 1789 |
| Catalog names | |
| NGC 3931 / 3917A • UGC 6825 • PGC 37073 • CGCG 268-096 / 269-009 • MCG + 09-20-011 • 2MASX J11511340 + 5200032 • GC 2592 • H III 769 • LDCE 0867 NED041 | |
NGC 3931 is a lenticular galaxy of the Hubble type E / S0 in the constellation Great Bear in the northern sky . It is estimated to be 40 million light years from the Milky Way .
The object was discovered on April 12, 1789 by the astronomer Wilhelm Herschel .