IC 256
| Galaxy IC 256 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Perseus |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 49 m 40.3 s |
| declination | + 46 ° 57 ′ 17 ″ |
| Appearance | |
| Morphological type | E / S0 o. C? |
| Brightness (visual) | 16.9 mag |
| Brightness (B-band) | 17.9 likes |
| Angular expansion | 0.5 ′ × 0.3 ′ |
| Position angle | 10 ° |
| Surface brightness | 14.7 mag / arcmin² |
| Physical data | |
| Redshift | 0.029200 ± 0.000063 |
| Radial velocity | 8754 ± 19 km / s |
|
Stroke distance v rad / H 0 |
(397 ± 28) · 10 6 ly (121.7 ± 8.5) Mpc |
| history | |
| discovery | Lewis Swift |
| Discovery date | September 6, 1888 |
| Catalog names | |
| IC 256 • PGC 10737 • 2MASX J02494026 + 4657162 • LDCE 0201 NED013 | |
IC 256 is a galaxy of Hubble type E / S0 in the constellation Perseus in the northern sky . It is estimated to be 397 million light years from the Milky Way . The latest research suggests that the galaxy observed is PGC 10729 .
The object was discovered by Lewis A. Swift on September 6, 1888 .