NGC 3888
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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 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]
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]
