IC 491
| Galaxy IC 491 |
|
|---|---|
|
|
| SDSS image from IC 491 & PGC 1779405 (r.) | |
| AladinLite | |
| Constellation | cancer |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 08 h 03 m 55.0 s |
| declination | + 26 ° 31 ′ 14 ″ |
| Appearance | |
| Morphological type | SM |
| Brightness (visual) | 14.5 mag |
| Brightness (B-band) | 15.3 mag |
| Angular expansion | 0.5 ′ × 0.2 ′ |
| Position angle | 100 ° |
| Surface brightness | 11.9 mag / arcmin² |
| Physical data | |
| Redshift | 0.021648 ± 0.000060 |
| Radial velocity | (6490 ± 18) km / s |
|
Stroke distance v rad / H 0 |
(287 ± 20) x 10 6 ly (88.1 ± 6.2) Mpc |
| history | |
| discovery | Stéphane Javelle |
| Discovery date | March 18, 1892 |
| Catalog names | |
| IC 491 • PGC 22631 • CGCG 148-106 NED01 • 2MASX J08032012 + 2548411 • | |
IC 491 is a galaxy of Hubble type SM in the constellation Cancer on the ecliptic . It is an estimated 287 million light years from the Milky Way .
The object was discovered by Stéphane Javelle on March 18, 1892 .