NGC 4031
| Galaxy NGC 4031 |
|
|---|---|
![NGC 4031 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC4031_-_SDSS_DR14.jpg)
|
|
| NGC 4031 SDSS image | |
| AladinLite | |
| Constellation | Big Bear |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 00 m 31.347 s |
| declination | + 31 ° 56 ′ 51.25 ″ |
| Appearance | |
| Morphological type | S? |
| Brightness (visual) | 14.4 mag |
| Brightness (B-band) | 15.2 mag |
| Angular expansion | 0.70 ′ × 0.4 ′ |
| Position angle | 60 ° |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Affiliation | WBL 369 |
| Redshift | 0.026218 ± 0.000167 |
| Radial velocity | 7860 ± 50 km / s |
|
Stroke distance v rad / H 0 |
(351 ± 25) x 10 6 ly (107.7 ± 7.6) Mpc |
| history | |
| discovery | Heinrich d'Arrest |
| Discovery date | April 6, 1864 |
| Catalog names | |
| NGC 4031 • PGC 37855 • CGCG 157-082 • MCG + 05-28-075 • 2MASX J12003130 + 3156514 • GALEX ASC J120031.25 + 315650.5 • NVSS J120031 + 315652 • NSA 140598 | |
NGC 4031 is a spiral galaxy with extensive star formation regions of the Hubble type Sb in the constellation Great Bear in the northern sky . It is estimated to be 351 million light years from the Milky Way and about 75,000 light years in diameter. In the same area of the sky are u. a. the galaxies NGC 3991 , NGC 3994 , NGC 3995 , NGC 4062 .
The object was discovered on April 6, 1864 by Heinrich Louis d'Arrest .