NGC 7320
| Galaxy NGC 7320 |
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|---|---|
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| Image of Stephan's quintet captured by the Hubble Space Telescope . Below is NGC 7317 , a little to the right of the center of the image are the two galaxies NGC 7318A (below) and NGC 7318B (above), above right NGC 7319 and to the left of it NGC 7320. | |
| AladinLite | |
| Constellation | Pegasus |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 22 h 36 m 03.4 s |
| declination | + 33 ° 56 ′ 53.2 ″ |
| Appearance | |
| Morphological type | SA (s) d HII |
| Brightness (visual) | 12.5 mag |
| Brightness (B-band) | 13.2 mag |
| Angular expansion | 2.2 ′ × 1.1 ′ |
| Position angle | 132 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Affiliation | NGC-7331 group? |
| Redshift | 0.002622 ± 0.000067 |
| Radial velocity | (786 ± 20) km / s |
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Stroke distance v rad / H 0 |
(45 ± 3) x 10 6 ly (13.7 ± 1.0) Mpc |
| history | |
| discovery | Edouard J.-M. Stephan |
| Discovery date | September 23, 1876 |
| Catalog names | |
| NGC 7320 • UGC 12101 • PGC 69270 • CGCG 514-063 • MCG + 06-49-042 • 2MASX J22360337 + 3356531 • Arp 319 • HCG 92A • VV 288 • GC 6064 • Holm 792A | |
NGC 7320 is a spiral galaxy in the constellation Pegasus , about 45 million light years from the Milky Way . Originally NGC 7320 was included in Stephen's quintet , but it is actually a galaxy in the foreground that could belong to the NGC-7331 group. Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This group of galaxies belongs to the class of galaxies .
NGC 7320 was discovered on September 23, 1876 by the French astronomer Édouard Jean-Marie Stephan .
See also
Web links
- astronews: A detailed look at Stephen's quintet
- extrasolarplanets: Galactic contortionists captured by the Gemini Observatory
- Hubble Space Telescope
Commons : NGC 7320 - 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