NGC 317
| Galaxy NGC 317 |
|
|---|---|
|
|
| SDSS image of NGC 317A (above) and NGC 317B (below) | |
| AladinLite | |
| Constellation | Andromeda |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 00 h 57 m 39.7 s |
| declination | + 43 ° 47 ′ 47 ″ |
| Appearance | |
| Morphological type | A: S0 B: SBbc |
| Brightness (visual) | A: 13.5 mag B: 13.1 mag |
| Brightness (B-band) | A: 14.5 mag B: 13.9 mag |
| Angular expansion | A: 1.4 ′ × 1.3 ′ B: 1.1 ′ × 0.5 ′ |
| Position angle | A: 111 ° B: 105 ° |
| Surface brightness | A: 14.0 mag / arcmin² B: 12.3 mag / arcmin² |
| Physical data | |
| Redshift | 0.018109 ± 0.000090 |
| Radial velocity | 5429 ± 27 km / s |
|
Stroke distance v rad / H 0 |
(250 ± 18) x 10 6 ly (76.8 ± 5.4) Mpc |
| history | |
| discovery | Lewis A. Swift |
| Discovery date | October 1, 1885 |
| Catalog names | |
| NGC 317 • UGC 593/594 • PGC 3442/3445 • CGCG 536-013 • MCG + 07-03-09 / 10 • V Zw 42 | |
NGC 317 is a pair of galaxies in the constellation Andromeda . It is estimated to be 250 million light years from the Milky Way . The object was discovered by Lewis A. Swift on October 1, 1885 .