IC 455
| Galaxy IC 455 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Cepheus |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 07 h 34 m 57.7 s |
| declination | + 85 ° 32 ′ 14 ″ |
| Appearance | |
| Morphological type | S0 |
| Brightness (visual) | 13.3 mag |
| Brightness (B-band) | 14.3 mag |
| Angular expansion | 1.1 ′ × 0.7 ′ |
| Position angle | 82 ° |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 2276 group NGC 2300 group LGG 145 |
| Redshift | 0.006838 ± 0.000170 |
| Radial velocity | 2050 ± 51 km / s |
|
Stroke distance v rad / H 0 |
(99 ± 7) · 10 6 ly (30.3 ± 2.2) Mpc |
| history | |
| discovery | William F. Denning |
| Discovery date | October 17, 1890 |
| Catalog names | |
| IC 455 • UGC 3815 • PGC 21334 • CGCG 362-044 • 363-030 • MCG + 14-04-033 • 2MASX J07345760 + 8532138 • 2MASS J07345756 + 8532139 • LDCE 540 NED007 | |
IC 455 is a lens-shaped galaxy of the Hubble type S0 in the constellation Cepheus in the northern sky . It is estimated to be 99 million light years away from the Milky Way and about 35,000 light years in diameter. Together with u. a. NGC 2268 , NGC 2276 , NGC 2300 , IC 469 , IC 499 and IC 512 make up the NGC 2276 group .
The object was discovered by William Frederick Denning on October 17, 1890 .