IC 123
| Galaxy IC 123 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | whale |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 01 h 28 m 51.4 s |
| declination | + 02 ° 26 ′ 47 ″ |
| Appearance | |
| Morphological type | Sc? / Sy2 |
| Brightness (visual) | 14.3 mag |
| Brightness (B-band) | 15.1 mag |
| Angular expansion | 0.4 ′ × 0.3 ′ |
| Position angle | 36 ° |
| Surface brightness | 11.8 mag / arcmin² |
| Physical data | |
| Redshift | 0.030618 ± 0.000087 |
| Radial velocity | 9179 ± 26 km / s |
|
Stroke distance v rad / H 0 |
(413 ± 29) · 10 6 ly (126.6 ± 8.9) Mpc |
| history | |
| discovery | Stéphane Javelle |
| Discovery date | January 6, 1894 |
| Catalog names | |
| IC 123 • PGC 5524 • CGCG 385-157 • MCG + 00-04-161 • IRAS F01262 + 0210 • 2MASX J01285148 + 0226476 • Ark 49 • UM 105 | |
IC 123 is a galaxy in the constellation Whale in the southern sky . It is around 413 million light years away from the Milky Way and has a diameter of around 45,000 light years . It is classified as a Seyfert galaxy , a special type of very bright galaxies that belong to the group of active galactic nuclei ( AGN ). The galaxy PGC 1228811 is in their optical proximity, but nothing else connects them with it.
The object was discovered by Stéphane Javelle on January 6, 1894 .
Web links
Individual evidence
Attention: The sorting key “IC 0123” overwrites the previously used key “IC0123”.