NGC 1998
| Galaxy NGC 1998 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | painter |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 05 h 33 m 15.7 s |
| declination | -48 ° 41 ′ 44 ″ |
| Appearance | |
| Morphological type | (R) SA (r) 0 ^ + |
| Brightness (visual) | 14.3 mag |
| Brightness (B-band) | 15.2 mag |
| Angular expansion | 0.9 ′ × 0.5 ′ |
| Position angle | 20 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Redshift | 0.015137 ± 0.000107 |
| Radial velocity | 4538 ± 32 km / s |
|
Stroke distance v rad / H 0 |
(194 ± 14) · 10 6 ly (59.5 ± 4.2) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | December 28, 1834 |
| Catalog names | |
| NGC 1998 • PGC 17434 • ESO 204-015 • 2MASX J05331577-4841442 • SGC 053157-4843.7 • GALEX ASC J053315.79-484144.2 | |
NGC 1998 is a lenticular galaxy of the Hubble type S0 in the constellation Painter in the southern sky . It is estimated to be 194 million light years from the Milky Way .
The object was discovered by John Herschel on December 28, 1834 .