UGC 2140
| Galaxy Arp 258 / UGC 2140 |
|
|---|---|
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| AladinLite | |
| Constellation | Aries |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 39 m 06.7 s |
| declination | + 18 ° 22 ′ 59 ″ |
| Appearance | |
| Morphological type | DBL SYS |
| Brightness (visual) | 14.5 mag |
| Angular expansion | 2 ′ × 1.4 ′ |
| Physical data | |
| Redshift | 0.013700 |
| Radial velocity | 4107 km / s |
|
Stroke distance v rad / H 0 |
(187 ± 13) x 10 6 ly (57.2 ± 4.0) Mpc |
| history | |
| Catalog names | |
| UGC 2140 • PGC 10042/43/46 • CGCG 462-037 • MCG + 03-7-37 / 38 • Arp 258 • HCG 18 • VV 143 • | |
Arp 258 = UGC 2140 = HCG 18 is a group of galaxies in the constellation Aries, which is about 187 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 of galaxies with irregular clusters .
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