NGC 1556
| Galaxy NGC 1556 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Swordfish |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 04 h 17 m 44.8 s |
| declination | -50 ° 09 ′ 52 ″ |
| Appearance | |
| Morphological type | Sab |
| Brightness (visual) | 12.7 mag |
| Brightness (B-band) | 13.5 likes |
| Angular expansion | 1.7 ′ × 0.5 ′ |
| Position angle | 167 ° |
| Surface brightness | 12.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.003299 ± 0.000024 |
| Radial velocity | 989 ± 7 km / s |
|
Stroke distance v rad / H 0 |
(37 ± 3) x 10 6 ly (11.3 ± 0.8) Mpc |
| diameter | 20,000 ly |
| history | |
| discovery | John Herschel |
| Discovery date | December 28, 1834 |
| Catalog names | |
| NGC 1556 • PGC 14818 • ESO 202-004 • IRAS 4163-5017 • 2MASX J04174483-5009520 • SGC 041624-5017.1 • HIPASS J0417-50 • LDCE 266 NED025 | |
NGC 1556 is a spiral dwarf galaxy of the Hubble type Sab in the constellation Dorado in the southern sky . It is estimated to be 37 million light years from the Milky Way and about 15,000 light years in diameter.
The object was discovered by John Herschel on December 28, 1834 .