NGC 4156
| Galaxy NGC 4156 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Hunting dogs |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 10 m 49.6 s |
| declination | + 39 ° 28 ′ 22 ″ |
| Appearance | |
| Morphological type | SB (rs) b / LINER |
| Brightness (visual) | 13.1 mag |
| Brightness (B-band) | 13.9 likes |
| Angular expansion | 1.3 ′ × 1.2 ′ |
| Position angle | 48 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 4151 group WBL 383-003 |
| Redshift | 0.022531 ± 0.000025 |
| Radial velocity | 6755 ± 7 km / s |
|
Stroke distance v rad / H 0 |
(303 ± 21) x 10 6 ly (92.9 ± 6.5) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | March 17, 1787 |
| Catalog names | |
| NGC 4156 • UGC 7173 • PGC 38773 • CGCG 215-047 • MCG + 07-25-045 • 2MASX J12104958 + 3928223 • GC 2760 • H II 642 • h 1113 • KCPG 325 • HOLM 345B • LDCE 869 NED003 | |
NGC 4156 is a bar-spiral galaxy with an active galaxy core of the Hubble type SBb in the constellation Hounds in the northern sky . It is estimated to be 303 million light years from the Milky Way and about 115,000 light years in diameter. Together with NGC 4151 and PGC 38756 , it forms the galaxy trio Holm 345 .
In the same area of the sky are u. a. the galaxies NGC 4145 , IC 3014 , IC 3022 .
The supernovae SN 1974A was observed here.
The object was discovered on March 17, 1787 by the astronomer William Herschel using his 18.7 inch mirror telescope.