NGC 4812
| Galaxy NGC 4812 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | centaur |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 56 m 52.7 s |
| declination | -41 ° 48 ′ 48 ″ |
| Appearance | |
| Morphological type | S0 |
| Brightness (visual) | 13.2 mag |
| Brightness (B-band) | 14.2 mag |
| Angular expansion | 1.2 ′ × 0.4 ′ |
| Position angle | 36 ° |
| Surface brightness | 12.3 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 298 |
| Redshift | 0.012232 +/- 0.000150 |
| Radial velocity | 3667 +/- 45 km / s |
|
Stroke distance v rad / H 0 |
(156 ± 11) · 10 6 ly (47.9 ± 3.4) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | June 8, 1834 |
| Catalog names | |
| NGC 4812 • PGC 44204 • ESO 323-G048 • MCG -07-27-018 • 2MASX J12565270-4148479 • SGC 125405-4132.5 • GC 3313 • h 3442 • LDCE 0916 NED128 | |
NGC 4812 is a 13.2 likes bright lenticular galaxy of Hubble type S0 in the constellation Centaurus in the southern sky . It is an estimated 156 million light years away from the Milky Way and has a diameter of about 60,000 ly.
Together with NGC 4811, it forms a gravitational double galaxy.
The object was discovered on June 8, 1834 by John Herschel with an 18-inch reflector telescope, who described it as "eF, R, gbM, 30 arcseconds, 1.5 'distant from the foregoing [NGC 4811] position - 170.9 degrees" .