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 .