NGC 845
| Galaxy NGC 845 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Andromeda |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 12 m 19.8 s |
| declination | 37 ° 28 ′ 38 ″ |
| Appearance | |
| Morphological type | Sb |
| Brightness (visual) | 13.6 mag |
| Brightness (B-band) | 14.4 mag |
| Angular expansion | 1.7 ′ × 0.4 ′ |
| Position angle | 149 ° |
| Surface brightness | 13.9 mag / arcmin² |
| Physical data | |
| Redshift | 0.014774 +/- 0.000057 |
| Radial velocity | 4429 +/- 17 km / s |
|
Stroke distance v rad / H 0 |
(204 ± 14) · 10 6 ly (62.4 ± 4.4) Mpc |
| diameter | 100,000 ly |
| history | |
| discovery | John Herschel |
| Discovery date | October 1828 |
| Catalog names | |
| NGC 845 • UGC 1695 • PGC 8438 • IRAS 02093 + 3714 • LDCE 0148 NED005 | |
NGC 845 is a spiral galaxy of Hubble type Sb in the constellation Andromeda . It is around 204 million light years away from the Milky Way and has a diameter of around 100,000 light years.
The object was discovered by John Herschel in October 1828 .