IC 455
Galaxy IC 455 |
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AladinLite | |
Constellation | Cepheus |
Position equinox : J2000.0 , epoch : J2000.0 |
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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 .