NGC 3888
Galaxy in the constellation Ursa Major
From Wikipedia, the free encyclopedia
NGC 3888 is an intermediate spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background is 2,560±12 km/s, which corresponds to a Hubble distance of 123.2 ± 8.6 Mly (37.76 ± 2.65 Mpc).[1] Additionally, six non-redshift measurements give a farther mean distance of 129.97 ± 2.51 Mly (39.850 ± 0.770 Mpc).[2] It was discovered by German-British astronomer William Herschel on 14 April 1789.[3][4]
Right ascension11h 47m 34.3762s[1]
Declination+55° 58′ 01.664″[1]
| NGC 3888 | |
|---|---|
NGC 3888 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 11h 47m 34.3762s[1] |
| Declination | +55° 58′ 01.664″[1] |
| Redshift | 0.007986±0.0000100[1] |
| Heliocentric radial velocity | 2,394±3 km/s[1] |
| Distance | 129.97 ± 2.51 Mly (39.850 ± 0.770 Mpc)[2] |
| Group or cluster | NGC 3780 group (LGG 247) |
| Apparent magnitude (V) | 12.7g[1] |
| Characteristics | |
| Type | SAB(rs)c[1] |
| Size | ~74,200 ly (22.74 kpc) (estimated)[1] |
| Apparent size (V) | 1.31′ × 1.15′[1] |
| Other designations | |
| IRAS 11449+5614, 2MASX J11473433+5558021, UGC 6765, MCG +09-19-189, Mrk 188, PGC 36789, CGCG 268-085, VV 455[1] | |
NGC 3888 is a starburst galaxy.[1] It also has a nucleus which shines in the ultraviolet range, and is thus listed in Markarian's catalogue as Mrk 188.[5]
