NGC 3557
| Galaxy NGC 3557 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | centaur |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 11 h 09 m 57.6 s |
| declination | -37 ° 32 ′ 21 ″ |
| Appearance | |
| Morphological type | E3 / LINER |
| Brightness (visual) | 10.6 mag |
| Brightness (B-band) | 11.6 mag |
| Angular expansion | 4.0 ′ × 3.0 ′ |
| Position angle | 21 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 229 |
| Redshift | 0.010300 ± 0.000060 |
| Radial velocity | (3088 ± 18) km / s |
|
Stroke distance v rad / H 0 |
(129 ± 9) · 10 6 ly (39.5 ± 2.8) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | April 21, 1835 |
| Catalog names | |
| NGC 3557 • PGC 33871 • ESO 377-016 • MCG -06-25-005 • 2MASX J11095583-3732345 • LDCE 0783 NED006 | |
NGC 3557 is an elliptical galaxy of Hubble type E3 in the constellation Centaurus in the southern sky . It is estimated to be 129 million light years from the Milky Way .
The object was discovered by John Herschel on April 21, 1835 .