| NGC 289 | |
|---|---|
.jpg) Hubble Space Telescope image of NGC 289 | |
| Observation data (J2000epoch) | |
| Constellation | Sculptor |
| Right ascension | 00h 52m 42.365s[1] |
| Declination | −31° 12′ 20.99″[1] |
| Redshift | 0.0054[2] |
| Heliocentric radial velocity | 1,628 km/s[3] |
| Distance | 76.1 Mly (23.33 Mpc)[3] |
| Apparent magnitude (V) | 11.0[4] |
| Apparent magnitude (B) | 11.4[2] |
| Characteristics | |
| Type | SB(rs)bc[5] |
| Apparent size (V) | 3.1' x 2.5'[4] |
| Other designations | |
| MCG -05-03-010,IRAS 00502-3128,[2]PGC 3089,2MASSX J00524236-3112209 | |
NGC 289 is aspiral galaxy in the southernconstellation ofSculptor, located at a distance of 76megalight-years from theMilky Way.[3] It was discovered on September 27, 1834, byJohn Herschel. The compiler of theNew General Catalogue,John Louis Emil Dreyer, noted that NGC 289 was "pretty bright, large, extended, between 2 considerably bright stars".[4] The plane of the galaxy is inclined by an angle of 45° to the line of sight from the Earth.[5]
This is a Type IISeyfert galaxy with anactive galactic nucleus. A dust lane is seen crossing the nucleus, and there are indications of recentstarburst activity nearby.[6] NGC 289 is a giant, gas-rich,low surface brightness galaxy with a small bulge at the nucleus, a small centralbar, and two inner spiral arms. These arms split into multiple parts as they extend into the outer disk. The galaxy has adark matter halo that has an estimated 3.5 times the mass of the gaseous and stellar components. There is a dwarf elliptical companion to the north of the galaxy,[7] designated Arp 1981,[6] that may be having a perturbing influence.[7]
Media related toNGC 289 at Wikimedia Commons
