NGC 4161
| Galaxy NGC 4161 |
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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 |
|
| Right ascension | 12 h 11 m 33.4 s |
| declination | + 57 ° 44 ′ 15 ″ |
| Appearance | |
| Morphological type | S? / LINER |
| Brightness (visual) | 13.0 likes |
| Brightness (B-band) | 13.7 mag |
| Angular expansion | 1.1 '× 0.7' |
| Position angle | 50 ° |
| Surface brightness | 12.6 mag / arcmin² |
| Physical data | |
| Redshift | 0.016341 ± 0.000030 |
| Radial velocity | 4899 ± 9 km / s |
|
Stroke distance v rad / H 0 |
(223 ± 16) x 10 6 ly (68.4 ± 4.8) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | April 17, 1789 |
| Catalog names | |
| NGC 4161 • UGC 7191 • PGC 38834 • CGCG 292-078 • MCG + 10-18-002 • IRAS 12090 + 5800 • 2MASX J12113350 + 5744147 • GC 2764 • H II 803 • GALEX ASC J121133.45 + 574416.0 | |
NGC 4161 is a spiral galaxy with an active nucleus of the Hubble type Sc in the constellation Great Bear in the northern sky . It is estimated to be 223 million light years from the Milky Way and about 70,000 light years across.
In the same area of the sky is u. a. the galaxy NGC 4149 .
The type II supernovae SN 2006dk and SN 2007gw were observed here.
The object was discovered by William Herschel on April 17, 1789 .