| NGC 4375 | |
|---|---|
 NGC 4375 imaged bySDSS | |
| Observation data (J2000epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 12h 25m 00.4734s[1] |
| Declination | +28° 33′ 30.952″[1] |
| Redshift | 0.030153[1] |
| Heliocentric radial velocity | 9040 ± 3 km/s[1] |
| Distance | 448.6 ± 31.4 Mly (137.54 ± 9.63 Mpc)[1] |
| Apparent magnitude (V) | 12.6[1] |
| Characteristics | |
| Type | SB(r)ab pec?[1] |
| Size | ~148,000 ly (45.37 kpc) (estimated)[1] |
| Apparent size (V) | 1.4′ × 1.2′[1] |
| Other designations | |
| IRAS 12224+2850,2MASX J12250049+2833306,UGC 7496,MCG +05-29-080,PGC 40449,CGCG 158-100[1] | |
NGC 4375 is abarred spiral galaxy in theconstellation ofComa Berenices. Its velocity with respect to thecosmic microwave background is 9325 ± 20 km/s, which corresponds to aHubble distance of 137.54 ± 9.63Mpc (~448 millionlight-years).[1] However, fournon-redshift measurements give a closer distance of 105.5 Mpc (~344 million light-years).[2] The galaxy was discovered by German-British astronomerWilliam Herschel on 11 April 1785.[3]
TheSIMBAD database lists NGC 4375 as aSeyfert II Galaxy, i.e. it has aquasar-like nuclei with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.[4]
Twosupernovae have been observed in NGC 4375:
Media related toNGC 4375 at Wikimedia Commons