NGC 7173
| Galaxy data from NGC 7173 |
|
|---|---|
 |
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| The galaxies NGC 7173 (left), NGC 7174 (right) and NGC 7176 (below) captured by the Hubble Space Telescope . | |
| AladinLite | |
| Constellation | Southern fish |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 22 h 02 m 03.2 s |
| declination | -31 ° 58 ′ 25 ″ |
| Appearance | |
| Morphological type | E + pec: |
| Brightness (visual) | 11.9 likes |
| Brightness (B-band) | 12.9 mag |
| Angular expansion | 1.2 ′ × 0.9 ′ |
| Position angle | 143 ° |
| Surface brightness | 12.1 mag / arcmin² |
| Physical data | |
| Affiliation | HCG 90 NGC 7154 group NGC 7172 group LGG 450 |
| Redshift | 0.008329 ± 0.000040 |
| Radial velocity | (2497 ± 12) km / s |
|
Stroke distance v rad / H 0 |
(113 ± 8) · 10 6 ly (34.7 ± 2.4) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | September 25, 1834 |
| Catalog names | |
| NGC 7173 • UGC A 422 • PGC 67878 • ESO 466-39 • MCG -05-52-008 • 2MASX J22020320-3158253 • SGC 215909-3212.9 • HCG 90C • h 3909 • VV 698 • AM 2159-321 • LDCE 1496 NED008 | |
NGC 7173 is a cD galaxy of Hubble type E3 Southern in the constellation fish. It is an estimated 113 million light years from the Milky Way and about 40,000 light years in diameter. Together with NGC 7172 , NGC 7174 and NGC 7176 , it forms the Hickson Compact Group 90 .
The object was discovered on September 25, 1834 by the British astronomer John Herschel .
Web links
Commons : NGC 7173 - collection of images, videos, and audio files
- Hubble Space Telescope
- Compact Hickson Group 90 - Astronomy Picture of the Day, March 13, 2009.
- Spektrum .de: amateur recordings [1]