| NGC 1533 | |
|---|---|
| Observation data (J2000 epoch) | |
| Constellation | Dorado |
| Right ascension | 04h 09m 51.8s[1] |
| Declination | -56° 07′ 06″[1] |
| Redshift | 790 ± 5 km/s[1] |
| Distance | 62 ± 4 Mly (19.0 ± 1.1 Mpc)[2][a] |
| Type | (L)SB(rs)00[1] |
| Apparent dimensions (V) | 2′.8 × 2′.3[1] |
| Apparent magnitude (V) | 11.7[1] |
| Other designations | |
| PGC 14582[1] | |
| See also: Galaxy, List of galaxies | |
NGC 1533 is a barred lenticular galaxy with faint spiral structure in the constellation Dorado and the seventh brightest member of the Dorado Group and 1°[3] off the group's center.[2] It is surrounded by a vast arc or ring of H I which is connected to IC 2038 and IC 2039.[2] The ring orbits around 32 kpc from the center.[3][b] It is typical of lenticular galaxies in that star formation is weak in NGC 1533.[2] Using both the surface brightness fluctuation (SBF) and globular cluster luminosity function (GCLF) methods, its distance was estimated in 2007 to be 19.4 ± 1.1 Mpc and 18.6 ± 2.0 Mpc respectively.[2] Averaging these together gives a distance of around 19 million parsecs or 62 million light-years from earth.[a] In 1970, a supernova was detected in NGC 1533.[4]
NGC 1533 was discovered by John Herschel on December 5, 1834.