NGC 7806
| Galaxy NGC 7806 |
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|---|---|
![NGC 7805 (l) and NGC 7806 (r) with LEDA 111 (r) [1] 81 cm reflecting telescope of the Mount Lemmon Observatory](https://de.wikipedia.org/wiki/Datei:N7806s.jpg)
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| NGC 7805 (l) and NGC 7806 (r) with LEDA 111 (r) 81 cm reflecting telescope of the Mount Lemmon observatory | |
| AladinLite | |
| Constellation | Pegasus |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 00 h 01 m 30.05 s |
| declination | + 31 ° 26 ′ 30.7 ″ |
| Appearance | |
| Morphological type | SA (rs) bc? / pec |
| Brightness (visual) | 13.5 likes |
| Brightness (B-band) | 14.3 mag |
| Angular expansion | 1.1 ′ × 0.8 ′ |
| Position angle | 20 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Affiliation |
NGC 7819 Group NGC 7831 Group LGG 1 |
| Redshift | 0.015904 ± 0.000023 |
| Radial velocity | (4768 ± 7) km / s |
|
Stroke distance v rad / H 0 |
(221 ± 15) x 10 6 ly (67.8 ± 4.7) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | October 9, 1790 |
| Catalog names | |
| NGC 7806 • UGC 12911 • PGC 112 • CGCG 498-065 • CGCG 499-037 • MCG + 05-01-025 • 2MASX J00013005 + 3126306 • Arp 112 • VV 226 • GC 2295 • H III 856 • h 5043 • GALEX MSC J000129.98 + 312635.7 • KPG 602B • HOLM 826B | |
NGC 7806 is a spiral galaxy of Hubble type Sb in the constellation Pegasus at the northern sky . It is estimated to be 221 million light years from the Milky Way and about 100,000 light years in diameter. With NGC 7805 it forms the interactive pair Arp 112 , KPG 602A or Holm 826A . In addition, the repulsion of a spiral arm ( MCG + 05-01-002 ) can be seen from the spiral galaxy .
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class of elliptical galaxies that repel spiral arms (Arp catalog) .
The galaxy is considered a member of the NGC 7831 group ( LGG 1 ).
The object was discovered on October 9, 1790 by Wilhelm Herschel with his 18.7-inch reflector telescope and later included in his New General Catalog by Johan Dreyer .
