NGC 933
| Galaxy NGC 933 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Andromeda |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 29 m 17.5 s |
| declination | + 45 ° 54 ′ 41 ″ |
| Appearance | |
| Morphological type | S. |
| Brightness (visual) | 14.3 mag |
| Brightness (B-band) | 15.1 mag |
| Angular expansion | 1.30 × 0.9 |
| Position angle | 35 ° |
| Surface brightness | 14.3 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 57 |
| Redshift | 0.017028 ± 0.000037 |
| Radial velocity | 5105 ± 11 km / s |
|
Stroke distance v rad / H 0 |
(234 ± 16) x 10 6 ly (71.8 ± 5.0) Mpc |
| history | |
| discovery | Lewis Swift |
| Discovery date | September 11, 1885 |
| Catalog names | |
| NGC 933 • UGC 1956 • PGC 9465 • CGCG 553-016 • MCG + 08-05-013 • 2MASX J02291746 + 4554409 • GALEX ASC J022917.09 + 455442.3 | |
NGC 933 is a spiral galaxy in the constellation Andromeda in the northern sky . It is estimated to be 234 million light years from the Milky Way and has a diameter of about 89,000 ly. Together with IC 1799 and PGC 9186 , it forms the small IC 1799 group ( LGG 57 ). The galaxy NGC 920 is located in the same area of the sky .
The object was by astronomer A. Swift Lewis on September 11, 1885 using a 16-inch - telescope discovered.