NGC 2708
Galaxy in the constellation Hydra
From Wikipedia, the free encyclopedia
NGC 2708 is a spiral galaxy in the constellation of Hydra. Its velocity with respect to the cosmic microwave background is 2315 ± 22 km/s, which corresponds to a Hubble distance of 34.15 ± 2.41 Mpc (~111 million light-years).[1] It was discovered by German-British astronomer William Herschel on 6 January 1785.[2] This galaxy was also observed by British astronomer John Herschel on 12 March 1826, and later listed as NGC 2727.[2]
| NGC 2708 | |
|---|---|
NGC 2708 imaged by Pan-STARRS | |
| Observation data (J2000 epoch) | |
| Constellation | Hydra |
| Right ascension | 08h 56m 08.0688s[1] |
| Declination | −03° 21′ 36.467″[1] |
| Redshift | 0.006698 [1] |
| Heliocentric radial velocity | 2008 ± 5 km/s[1] |
| Distance | 111.4 ± 7.9 Mly (34.15 ± 2.41 Mpc)[1] |
| Group or cluster | NGC 2708 Group (LGG 164) |
| Apparent magnitude (V) | 12.0[1] |
| Characteristics | |
| Type | SAB(s)b pec?[1] |
| Size | ~98,800 ly (30.29 kpc) (estimated)[1] |
| Apparent size (V) | 2.7′ × 1.4′[1] |
| Other designations | |
| IRAS 08535-0309, 2MASX J08560804-0321363, NGC 2727, MCG +00-23-015, PGC 25097, CGCG 005-034[1] | |
The SIMBAD database lists NGC 2708 as a Seyfert II galaxy,[3] i.e. a galaxy with a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.
