NGC 4172
| Galaxy NGC 4172 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Big Bear |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 12 m 14.9 s |
| declination | + 56 ° 10 ′ 39 ″ |
| Appearance | |
| Morphological type | S? |
| Brightness (visual) | 13.3 mag |
| Brightness (B-band) | 14.2 mag |
| Angular expansion | 1.3 '× 1.1' |
| Position angle | 6 ° |
| Surface brightness | 13.5 mag / arcmin² |
| Physical data | |
| Redshift | 0.030935 ± 0.000167 |
| Radial velocity | 9274 ± 50 km / s |
|
Stroke distance v rad / H 0 |
(418 ± 29) x 10 6 ly (128.2 ± 9.0) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 14, 1789 |
| Catalog names | |
| NGC 4172 • UGC 7205 • PGC 38887 • CGCG 269-039 / 292-080 • MCG + 09-20-109 • 2MASX J12121490 + 5610386 • GC 2770 • H II 792 • h 1123 • | |
NGC 4172 is a galaxy of Hubble type S? in the constellation Great Bear in the north star sky . It is an estimated 418 million light years from the Milky Way .
The object was discovered by Wilhelm Herschel on April 14, 1789 .