Arp 256
| Galaxy Arp 256 |
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|---|---|
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| The pair of galaxies Arp 256 captured by the Hubble Space Telescope . PGC 1221 is on the left and PGC 1224 on the right. | |
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 00 h 18 m 50.5 s |
| declination | -10 ° 22 ′ 09 ″ |
| Appearance | |
| Brightness (visual) | A: 13.6 mag B: 14.3 mag |
| Angular expansion | A: 1.4 x 0.9 B: 1.1 x 0.6 |
| Physical data | |
| Redshift | 0.027299 |
| Radial velocity | 8184 km / s |
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Stroke distance v rad / H 0 |
(369 ± 26) · 10 6 ly (113 ± 7.9) Mpc |
| history | |
| Catalog names | |
| PGC 1221/1224 • MCG -02-01-052 / -02-01-051 • IRAS 00163-1039 • 2MASX J00185089-1022364 • Arp 256 • VV 352 • Holm 7 | |
Arp 256 is an interacting galaxy pair in the constellation Whale at the celestial equator , which is an estimated 369 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 galaxies showing signs of splitting .
Web links
Commons : Arp 256 - collection of images, videos and audio files
- Hubble Space Telescope
- astronews.com: Picture of the day January 15, 2013
- Arp Atlas of Peculiar Galaxies
- Seligman Arp
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