NGC 4811
| Galaxy NGC 4811 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | centaur |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 56 m 52.3 s |
| declination | -41 ° 47 ′ 50 ″ |
| Appearance | |
| Morphological type | SAB (rl) 0 ^ + |
| Brightness (visual) | 13.1 mag |
| Brightness (B-band) | 14.0 mag |
| Angular expansion | 1.3 ′ × 0.9 ′ |
| Position angle | 35 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 298 |
| Redshift | 0.010851 +/- 0.000150 |
| Radial velocity | 3253 +/- 45 km / s |
|
Stroke distance v rad / H 0 |
(138 ± 10) x 10 6 ly (42.2 ± 3.0) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | June 8, 1834 |
| Catalog names | |
| NGC 4811 • PGC 44201 • ESO 323-47 • MCG -07-27-019 • 2MASX J12565235-4147499 • SGC 125404-4131.6 • GC 3312 • h 3441 • LDCE 0916 NED127 | |
NGC 4811 is a 13.1 mag bright lenticular galaxy of the Hubble type SB0-a in the constellation Centaur in the southern sky . It is estimated to be 138 million light years from the Milky Way and about 60,000 ly in diameter.
Together with NGC 4812, 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, 40 arcseconds, the preceding of two".