NGC 7691
| Galaxy NGC 7691 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Pegasus |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 23 h 32 m 24.4 s |
| declination | + 15 ° 50 ′ 52 ″ |
| Appearance | |
| Morphological type | SAB (rs) bc |
| Brightness (visual) | 12.9 mag |
| Brightness (B-band) | 13.7 mag |
| Angular expansion | 2.1 '× 1.6' |
| Position angle | 175 ° |
| Surface brightness | 14.1 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 7711 group LGG 477 |
| Redshift | 0.013479 ± 0.000003 |
| Radial velocity | 4041 ± 1 km / s |
|
Stroke distance v rad / H 0 |
(188 ± 13) · 10 6 ly (57.6 ± 4.0) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | October 16, 1784 |
| Catalog names | |
| NGC 7691 • UGC 12654 • PGC 71699 • CGCG 455-009 • MCG + 03-60-001 • IRAS 23299 + 1534 • 2MASX J23322441 + 1550520 • GC 4980 • H III 213 • h 2250 • LDCE 1581 NED006 | |
NGC 7691 is a bar-spiral galaxy of the Hubble type SBbc in the constellation Pegasus in the northern sky . It is an estimated 188 million light years from the Milky Way and about 115,000 light years in diameter.
In the same area of the sky are u. a. the galaxies NGC 7703 and NGC 7711 .
The type IIP supernova SN 2014az was observed here.
The object was discovered by Wilhelm Herschel on October 16, 1784 .