IC 2457
| Galaxy IC 2457 |
|
|---|---|
|
|
| NGC 2809 (below) & IC 2457 | |
| AladinLite | |
| Constellation | cancer |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 09 h 17 m 04.1 s |
| declination | + 20 ° 05 ′ 37 ″ |
| Appearance | |
| Morphological type | SB (bc) |
| Brightness (visual) | 15.0 mag |
| Brightness (B-band) | 15.8 mag |
| Angular expansion | 0.50 × 0.3 |
| Position angle | 50 ° |
| Surface brightness | 12.8 mag / arcmin² |
| Physical data | |
| Redshift | 0.029127 ± 0.000103 |
| Radial velocity | 8732 ± 31 km / s |
|
Stroke distance v rad / H 0 |
(386 ± 27) · 10 6 ly (118.4 ± 8.3) Mpc |
| history | |
| discovery | Stéphane Javelle |
| Discovery date | April 9, 1896 |
| Catalog names | |
| IC 2457 • PGC 1616119 • 2MASX J09170413 + 2005368 • GALEX ASC J091704.24 + 200535.5 | |
IC 2457 is a bar-spiral galaxy of the Hubble type SB (bc) in the constellation Cancer on the ecliptic . It is an estimated 386 million light years from the Milky Way and about 55,000 light years in diameter .
In the same area of the sky are u. a. the galaxies NGC 2804 , NGC 2806 , NGC 2807 , NGC 2809 .
The object was discovered on April 9, 1896 by Stéphane Javelle .