Arp 45
| Galaxy Arp 45 / UGC 9178 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Bear keeper |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 14 h 19 m 53.9 s |
| declination | + 51 ° 53 ′ 38 ″ |
| Appearance | |
| Morphological type | S (B?) C: |
| Brightness (visual) | 15.5 mag |
| Angular expansion | 1.1 ′ × 0.5 ′ |
| Physical data | |
| Redshift | 0.029033 ± 0.000324 |
| Radial velocity | (8704 ± 97) km / s |
|
Stroke distance v rad / H 0 |
(394 ± 28) x 10 6 ly (120.9 ± 8.6) Mpc |
| history | |
| Catalog names | |
| UGC 9178 • PGC 51214 • CGCG 272-047 / 273-002 • MCG + 09-23-064 • Arp 45 • VV 2 • | |
UGC 9178 = Arp 45 is an interacting pair of galaxies in the Bear Keeper constellation. It is an estimated 394 million light years away 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 companion of low surface brightness on one arm . One arm of the galaxy ( VV 2a ) leads to the great companion ( VV 2b ), the other to the small companion / spiral arm ( VV 2c ).
Web links
Commons : Arp 45 - collection of images, videos and audio files
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