NGC 191
| Galaxy NGC 191 |
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|---|---|
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| SDSS image of NGC 191 and IC 1563 (below) | |
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 00 h 38 m 59.4 s |
| declination | -09 ° 00 ′ 09 ″ |
| Appearance | |
| Morphological type | SAB (rs) c: / pec |
| Brightness (visual) | 13.4 mag |
| Brightness (B-band) | 14.1 mag |
| Angular expansion | 1.4 ′ × 1.2 ′ |
| Position angle | 128 ° |
| Surface brightness | 13.8 mag / arcmin² |
| Physical data | |
| Affiliation | Abell 85 |
| Redshift | 0.020267 ± 0.000107 |
| Radial velocity | (6076 ± 32) km / s |
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Stroke distance v rad / H 0 |
(274 ± 19) x 10 6 ly (84.0 ± 5.9) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | November 28, 1785 |
| Catalog names | |
| NGC 191 • PGC 2331 • MCG -02-02-077 • 2MASX J00385944-0900099 • Arp 127 • GC 95 • H II 479 • h 38 • HOLM 013A • USGC S022 NED02 | |
NGC 191 is a bar-spiral galaxy of the Hubble type SBc / P in the constellation Whale south of the ecliptic . It is estimated to be 274 million light years away from the Milky Way and has a diameter of around 110,000 ly. Together with IC 1563 , it forms an interacting galaxy pair that is recorded under the names Arp 127 and Holm 13 . In the same area of the sky is u. a. the galaxy NGC 195 .
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class of elliptical galaxies close to spiral galaxies and disturbing them (Arp catalog) .
The object was discovered on November 28, 1785 by the German-British astronomer Wilhelm Herschel .
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