NGC 4431
| Galaxy NGC 4431 |
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|---|---|
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|
| SDSS recording | |
| AladinLite | |
| Constellation | Virgin |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 27 m 27.4 s |
| declination | + 12 ° 17 ′ 25 ″ |
| Appearance | |
| Morphological type | SA (r) 0 |
| Brightness (visual) | 12.9 mag |
| Brightness (B-band) | 13.9 likes |
| Angular expansion | 1.70 × 1.0 |
| Position angle | 177 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.003115 +/- 0.000033 |
| Radial velocity | 934 +/- 10 km / s |
|
Stroke distance v rad / H 0 |
(39 ± 3) x 10 6 ly (12 ± 0.9) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 17, 1784 |
| Catalog names | |
| NGC 4431 • UGC 07569 • PGC 040852 • MCG + 02-32-062 • 2MASX J12272735 + 1217252 • VCC 1010 • GC 2984 • H II 171 • h 1268 • | |
NGC 4431 is a lenticular galaxy of Hubble type SA (r) 0 in the constellation Virgo the northern sky , the estimated 39 million light-years from the Milky Way 's center. It forms an optical trio with NGC 4436 and NGC 4440 and is part of the Virgo galaxy cluster .
The object was discovered by Wilhelm Herschel on April 17, 1784 .