NGC 3056
| Galaxy NGC 3056 |
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|---|---|
|
|
| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Air pump |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 09 h 54 m 32.9 s |
| declination | -28 ° 17 ′ 53 ″ |
| Appearance | |
| Morphological type | SA (rl) 0 ^ 0 |
| Brightness (visual) | 11.7 mag |
| Brightness (B-band) | 12.6 mag |
| Angular expansion | 1.8 ′ × 1.1 ′ |
| Position angle | 16 ° |
| Surface brightness | 12.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.003246 ± 0.000010 |
| Radial velocity | 973 ± 3 km / s |
|
Stroke distance v rad / H 0 |
(34 ± 2) x 10 6 ly (10.4 ± 0.7) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | March 30, 1835 |
| Catalog names | |
| NGC 3056 • PGC 28576 • ESO 435-007 • MCG -05-24-003 • 2MASX J09543290-2817533 • SGC 095218-2803.6 • GALEX ASC J095432.90-281751.8 • LDCE 0683 NED005 | |
NGC 3056 is a lenticular galaxy of the Hubble type SB0-a in the constellation Air Pump in the southern sky . It is estimated to be 34 million light years from the Milky Way and about 20,000 light years across.
The object was discovered on March 30, 1835 by the astronomer John Herschel with his 18.7-inch reflecting telescope and was later included in his New General Catalog by Johan Dreyer .