NGC 3917
| Galaxy NGC 3917 |
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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 51 m 45.4 s |
| declination | + 51 ° 49 ′ 29 ″ |
| Appearance | |
| Morphological type | SAcd:; LINER / HII |
| Brightness (visual) | 11.8 mag |
| Brightness (B-band) | 12.5 mag |
| Angular expansion | 5 ′ × 1.1 ′ |
| Position angle | 77 ° |
| Surface brightness | 13.5 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 258 |
| Redshift | 0.003218 +/- 0.000005 |
| Radial velocity | 965 +/- 1 km / s |
|
Stroke distance v rad / H 0 |
(46 ± 3) · 10 6 ly (14.1 ± 1.0) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | March 17, 1790 |
| Catalog names | |
| NGC 3917 • UGC 6815 • PGC 37036 • CGCG 268-093 / 269-005 • MCG + 09-20-008 • IRAS 11481 + 5206 • 2MASX J11504548 + 5149271 • GC 2579, GC 2583 • H II 824 • h 994 • LDCE 0867 NED040 | |
NGC 3917 is a spiral galaxy of Hubble type Sc in the constellation Ursa Major at the northern sky . It is estimated to be 46 million light years from the Milky Way .
The object was discovered on March 17, 1790 by the astronomer Wilhelm Herschel .