NGC 7237
| Galaxy NGC 7237 |
|
|---|---|
|
|
| NGC 7236, NGC 7237, and NGC 7237C (right to left) | |
| AladinLite | |
| Constellation | Pegasus |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 22 h 14 m 46.9 s |
| declination | + 13 ° 50 ′ 27 ″ |
| Appearance | |
| Morphological type | SA0- |
| Brightness (visual) | 13.9 likes |
| Brightness (B-band) | 14.9 mag |
| Angular expansion | 0.6 ′ × 0.6 ′ |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Redshift | 0.026245 ± 0.000037 |
| Radial velocity | (7868 ± 11) km / s |
|
Stroke distance v rad / H 0 |
(360 ± 25) x 10 6 ly (110.3 ± 7.7) Mpc |
| history | |
| discovery | Albert Marth |
| Discovery date | August 25, 1864 |
| Catalog names | |
| NGC 7237 • UGC 11958 • PGC 68383 • CGCG 428-058 • MCG + 02-56-024 • 2MASX J22144500 + 1350476 • Arp 169 • LDCE 1507 NED006 • II Zw 172 • KPG 564B | |
NGC 7237 is an elliptical galaxy of Hubble type E / S0 in the constellation Pegasus. It is estimated to be 360 million light years from the Milky Way and about 65,000 light years in diameter. Together with NGC 7236 and NGC 7237C , it forms the galaxy triplet Arp 169 or KPG 564 .
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class galaxies with diffuse opposing arms .
The object was on 25 August 1864 by the astronomer Albert Marth using a 80-cm - telescope discovered.
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
Web links
Commons : NGC 7237 - collection of images, videos, and audio files
