IC 2458
| Galaxy IC 2458 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Big Bear |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 09 h 21 m 30.1 s |
| declination | + 64 ° 14 ′ 19 ″ |
| Appearance | |
| Morphological type | I0 / pec: |
| Brightness (visual) | 14.5 mag |
| Brightness (B-band) | 15.4 mag |
| Angular expansion | 0.5 ′ × 0.2 ′ |
| Position angle | 21 ° |
| Surface brightness | 11.9 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 2805 group NGC 2835 group WBL 218 LGG 173 |
| Redshift | 0.005117 ± 0.000027 |
| Radial velocity | (1534 ± 8) km / s |
|
Stroke distance v rad / H 0 |
(72 ± 5) x 10 6 ly (22.2 ± 1.6) Mpc |
| history | |
| discovery | Guillaume Bigourdan |
| Discovery date | 1899 |
| Catalog names | |
| NGC 2820A • IC 2458 • PGC 26485 • CGCG 312-004 • MCG + 11-12-005 • 2MASX J09213008 + 6414195 • Mrk 108 • GALEX ASC J092130.07 + 641419.0 • HOLM 124D • KTG 23B | |
IC 2458 (also NGC 2820A ) is a lens-shaped dwarf galaxy of the Hubble type S0 / a in the constellation Ursa Major in the northern sky . It is an estimated 72 million light years from the Milky Way and about 10,000 light years in diameter. Together with NGC 2805 , NGC 2814 and NGC 2820 , it forms the interactive galaxy quartet Holm 124 .
The type II supernova SN 1998bm was observed here.
The property was discovered by Guillaume Bigourdan in 1899 .