NGC 3568
Galaxy in the constellation Centaurus
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NGC 3568 is a barred spiral galaxy in the constellation of Centaurus. Its velocity with respect to the cosmic microwave background is 2,764±22 km/s, which corresponds to a Hubble distance of 132.9 ± 9.4 Mly (40.76 ± 2.87 Mpc).[1] However, 25 non-redshift measurements give a much closer mean distance of 81.96 ± 3.65 Mly (25.128 ± 1.119 Mpc).[2] It was discovered by British astronomer John Herschel on 21 April 1835.[3]
Right ascension11h 10m 48.4926s[1]
Declination−37° 26′ 51.601″[1]
| NGC 3568 | |
|---|---|
NGC 3568 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Centaurus |
| Right ascension | 11h 10m 48.4926s[1] |
| Declination | −37° 26′ 51.601″[1] |
| Redshift | 0.008152±0.00000700[1] |
| Heliocentric radial velocity | 2,444±2 km/s[1] |
| Distance | 81.96 ± 3.65 Mly (25.128 ± 1.119 Mpc)[2] |
| Group or cluster | NGC 3557 group (LGG 229) |
| Apparent magnitude (V) | 13.00[1] |
| Characteristics | |
| Type | SB(s)c[1] |
| Size | ~91,000 ly (27.91 kpc) (estimated)[1] |
| Apparent size (V) | 2.5′ × 0.8′[1] |
| Other designations | |
| ESO 377- G 020, IRAS 11084-3710, 2MASX J11104858-3726523, MCG -06-25-009, PGC 33952[1] | |
NGC 3568 is a Seyfert I galaxy, i.e. it has 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.[4][5]
