IC 558
| Galaxy IC 558 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | lion |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 09 h 45 m 00.3 s |
| declination | + 29 ° 27 ′ 08 ″ |
| Appearance | |
| Morphological type | E / LINER |
| Brightness (visual) | 14.1 mag |
| Brightness (B-band) | 15.1 mag |
| Angular expansion | 0.80 x 0.8 |
| Surface brightness | 13.7 mag / arcmin² |
| Physical data | |
| Redshift | 0.031135 ± 0.000100 |
| Radial velocity | 9334 ± 30 km / s |
|
Stroke distance v rad / H 0 |
(415 ± 29) x 10 6 ly (127.2 ± 8.9) Mpc |
| history | |
| discovery | Rudolf Ferdinand Spitaler |
| Discovery date | February 23, 1889 |
| Catalog names | |
| IC 558 • PGC 27931 • CGCG 152-063 • MCG + 05-23-033 • 2MASX J09450033 + 2927079 • | |
IC 558 is an elliptical galaxy with an active galaxy core in the constellation Leo. It is estimated to be 415 million light years from the Milky Way and about 100,000 light years in diameter.
The object was discovered on February 23, 1889 by the Austrian astronomer Rudolf Ferdinand Spitaler and later listed by Johan Dreyer in his index catalog .