NGC 4331
| Galaxy NGC 4331 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Dragon |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 22 m 35.960 s |
| declination | + 76 ° 10 ′ 20.90 ″ |
| Appearance | |
| Morphological type | In the? |
| Brightness (visual) | 14.0 mag |
| Brightness (B-band) | 14.6 mag |
| Angular expansion | 2.2 'x 0.4' |
| Position angle | 2 ° |
| Surface brightness | 13.8 mag / arcmin² |
| Physical data | |
| Affiliation |
NGC 4291 group NGC 4386 group NGC 4589 group LGG 284 |
| Redshift | 0.005234 ± 0.000017 |
| Radial velocity | (1569 ± 5) km / s |
|
Stroke distance v rad / H 0 |
(77 ± 5) · 10 6 ly (23.5 ± 1.6) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | December 12, 1797 |
| Catalog names | |
| NGC 4331 • UGC 7449 • PGC 40085 • CGCG 352-031 • MCG + 13-09-026 • IRAS F12204 + 7626 • 2MASX i J1222360 + 761020 • GC 2898 • H III 942 • h 1220 • HIJASS J1222 + 76 | |
NGC 4331 is an irregular galaxy of Hubble type in the constellation Draco the northern sky . It is estimated to be 77 million light years from the Milky Way and about 45,000 light years in diameter. It is a member of the eleven galaxies NGC 4589 group ( LGG 284 ).
In the same area of the sky are the galaxies NGC 4291 , NGC 4319 , NGC 4386 .
The object was discovered by Wilhelm Herschel on December 12, 1797 .