IC 421
| Galaxy IC 421 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Orion |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 05 h 32 m 08.6 s |
| declination | -07 ° 55 ′ 06 ″ |
| Appearance | |
| Morphological type | SAB (rs) bc |
| Brightness (visual) | 14.2 mag |
| Brightness (B-band) | 15.0 mag |
| Angular expansion | 3.3 ′ × 2.9 ′ |
| Position angle | 39 ° |
| Surface brightness | 16.5 mag / arcmin² |
| Physical data | |
| Redshift | 0.011835 ± 0.000013 |
| Radial velocity | 3548 ± 4 km / s |
|
Stroke distance v rad / H 0 |
(153 ± 11) · 10 6 ly (46.9 ± 3.3) Mpc |
| history | |
| discovery | Williamina Fleming |
| Discovery date | June 27, 1888 |
| Catalog names | |
| IC 421 • PGC 17407 • MCG -01-15-001 • 2MASX J05320852-0755054 • HIPASS J0532-07 | |
IC 421 is a bar-spiral galaxy of the Hubble type SBbc in the constellation Orion in the northern sky . It is estimated to be 153 million light years from the Milky Way and about 150,000 light years across .
The type IIP supernova SN 2013fp was observed here.
The object was discovered by Williamina Fleming on June 27, 1888 .