IC 456
| Galaxy IC 456 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Big dog |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 07 h 00 m 17.5 s |
| declination | -30 ° 09 ′ 50 ″ |
| Appearance | |
| Morphological type | SB (rs) 0 ^ + |
| Brightness (visual) | 11.9 likes |
| Brightness (B-band) | 12.9 mag |
| Angular expansion | 2.10 'x 1.3' |
| Position angle | 110 ° |
| Surface brightness | 12.8 mag / arcmin² |
| Physical data | |
| Affiliation | isolated |
| Redshift | 0.005737 ± 0.000077 |
| Radial velocity | 1720 ± 23 km / s |
|
Stroke distance v rad / H 0 |
(68 ± 5) · 10 6 ly (20.8 ± 1.5) Mpc |
| history | |
| discovery | Lewis Swift |
| Discovery date | December 19, 1890 |
| Catalog names | |
| IC 456 • PGC 19993 • ESO 427-024 • MCG -05-17-002 • 2MASX J07001752-3009497 • SGC 065822-3005.5 • 2MASS J07001754-3009494 • LDCE 483 NED021 • 2MIG 0923 | |
IC 456 is a lenticular galaxy of the Hubble type SB0 in the constellation Great Dog in the southern sky . It is estimated to be 68 million light years from the Milky Way and about 55,000 light years in diameter.
The object was discovered by Lewis Swift on December 19, 1890 .