NGC 3985
| Galaxy NGC 3985 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Big Bear |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 11 h 56 m 42.1 s |
| declination | + 48 ° 20 ′ 02 ″ |
| Appearance | |
| Morphological type | SB (s) m: |
| Brightness (visual) | 12.5 mag |
| Brightness (B-band) | 13.2 mag |
| Angular expansion | 1.3 ′ × 0.8 ′ |
| Position angle | 73 ° |
| Surface brightness | 12.4 mag / arcmin² |
| Physical data | |
| Affiliation | UMa cluster |
| Redshift | 0.003163 +/- 0.000007 |
| Radial velocity | 948 +/- 2 km / s |
|
Stroke distance v rad / H 0 |
(45 ± 3) x 10 6 ly (13.8 ± 1.0) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | February 5, 1788 |
| Catalog names | |
| NGC 3985 • UGC 6921 • PGC 37542 • CGCG 243-031 • MCG + 08-22-045 • IRAS 11541 + 4836 • 2MASX J11564210 + 4820022 • GC 2631 • H III 707 • h 1025 • LDCE 867 NED052 | |
NGC 3985 is a spiral dwarf galaxy of the Hubble type SBm in the constellation Great Bear in the northern sky . It is estimated to be 45 million light-years from the Milky Way and about 15,000 ly in diameter. The galaxy is a member of the Ursa Major Galaxy Cluster .
In the same area of the sky are u. a. the galaxies NGC 3949 and NGC 3950 .
The object was discovered on February 5, 1788 by the German-British astronomer Wilhelm Herschel .