NGC 1668
| Galaxy NGC 1668 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Digger |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 04 h 46 m 05.9 s |
| declination | -44 ° 44 ′ 00 ″ |
| Appearance | |
| Morphological type | SA0 ^ -; D / cD |
| Brightness (visual) | 12.8 mag |
| Brightness (B-band) | 13.8 mag |
| Angular expansion | 1.6 ′ × 0.9 ′ |
| Position angle | 107 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Redshift | 0.033520 +/- 0.000334 |
| Radial velocity | (10049 +/- 100) km / s |
|
Stroke distance v rad / H 0 |
(441 ± 31) · 10 6 ly (135.3 ± 9.6) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | December 1, 1837 |
| Catalog names | |
| NGC 1668 • PGC 15957 • MCG -07-10-023 • 2MASX J04460591-4444001 • LDCE 0333 NED003 | |
NGC 1668 is an elliptical galaxy of the Hubble type E / SB0 in the constellation Gravestones in the southern sky . It is estimated to be 441 million light years from the Milky Way .
The object was discovered by John Herschel on December 1, 1837 .