Arp 54
| Galaxy Arp 54 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | whale |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 24 m 02.6 s |
| declination | -04 ° 41 ′ 35 ″ |
| Appearance | |
| Morphological type | SBc / HII |
| Brightness (visual) | 15.0 mag |
| Angular expansion | 1 ′ × 0.6 ′ |
| Physical data | |
| Redshift | 0.043337 ± 0.000147 |
| Radial velocity | (12992 ± 44) km / s |
|
Stroke distance v rad / H 0 |
(581 ± 41) · 10 6 ly (178.1 ± 12.5) Mpc |
| history | |
| Catalog names | |
| PGC 9113 • MCG -01-07-007 • 2MASX J02240262-0441359 • Arp 54 • VV 453 • | |
Arp 54 is a bar-spiral galaxy in the constellation Whale, which is in optical proximity to the object PGC 9107 . The galaxy is estimated to be 581 million light years from the Milky Way .
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class spiral galaxies with a small companion of high surface brightness on one arm .
Web links
literature
- Jeff Kanipe and Dennis Webb: The Arp Atlas of Peculiar Galaxies - A Chronicle and Observer's Guide , Richmond 2006, ISBN 978-0-943396-76-7