IC 2031
| Galaxy IC 2031 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Eridanus |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 04 h 06 m 14.7 s |
| declination | -05 ° 39 ′ 07 ″ |
| Appearance | |
| Morphological type | Sab |
| Brightness (visual) | 15.0 mag |
| Brightness (B-band) | 16.0 mag |
| Angular expansion | 0.50 x 0.5 |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Redshift | 0.016097 ± 0.000075 |
| Radial velocity | 4826 ± 22 km / s |
|
Stroke distance v rad / H 0 |
(213 ± 15) x 10 6 ly (65.2 ± 4.6) Mpc |
| history | |
| discovery | Edward Barnard |
| Catalog names | |
| IC 2031 • PGC 146069 • IRAS F04037-0547 • 2MASX J04061469-0539065 • | |
IC 2031 is a spiral galaxy of Hubble type Sab in the constellation Eridanus south of the celestial equator . It is estimated to be 213 million light years from the Milky Way and about 30,000 light years in diameter.
The object was discovered by Edward Barnard at the end of the 19th century.