NGC 4690
| Galaxy NGC 4690 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Virgin |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 47 m 55.5 s |
| declination | -01 ° 39 ′ 22 ″ |
| Appearance | |
| Morphological type | (R ') SA0-? |
| Brightness (visual) | 12.9 mag |
| Brightness (B-band) | 13.9 likes |
| Angular expansion | 1.2 ′ × 0.8 ′ |
| Position angle | 150 ° |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Redshift | 0.009223 +/- 0.000017 |
| Radial velocity | 2765 +/- 5 km / s |
|
Stroke distance v rad / H 0 |
(120 ± 8) x 10 6 ly (36.7 ± 2.6) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 11, 1787 |
| Catalog names | |
| NGC 4690 • UGC 7964 • PGC 43202 • MCG + 00-33-012 • GC 3220 • H III 664 • LDCE 0913 NED003 | |
NGC 4690 is a 12.9 likes bright lenticular galaxy of Hubble type e-S0 in the constellation of Virgo , which is about 120 million light-years from the Milky Way's center.
It was discovered on April 11, 1787 by Wilhelm Herschel with an 18.7-inch reflecting telescope, who described it as "vF, S".