IC 3947
| Galaxy IC 3947 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Berenike's hair |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 58 m 52.1 s |
| declination | + 27 ° 47 ′ 06 ″ |
| Appearance | |
| Morphological type | SA0 |
| Brightness (visual) | 14.4 mag |
| Brightness (B-band) | 15.4 mag |
| Angular expansion | 0.3 ′ × 0.2 ′ |
| Position angle | 95 ° |
| Surface brightness | 11.2 mag / arcmin² |
| Physical data | |
| Affiliation | Abell 1656 |
| Redshift | 0.018953 ± 0.000019 |
| Radial velocity | 5682 ± 6 km / s |
|
Stroke distance v rad / H 0 |
(254 ± 18) x 10 6 ly (78.0 ± 5.5) Mpc |
| history | |
| discovery | Hermann Kobold |
| Discovery date | May 12, 1896 |
| Catalog names | |
| IC 3947 • PGC 44515 • CGCG 160-211 • 2MASX J12585208 + 2747059 • | |
IC 3947 is a lenticular dwarf galaxy of the Hubble type S0 in the constellation Coma Berenices in the northern sky . It is an estimated 254 million light years away from the Milky Way , has a diameter of about 20,000 ly, and is a member of the Coma Galaxy Cluster .
The galaxies IC 3946 , IC 3949 , IC 3957 , IC 3959 are located in the same area of the sky .
The object was discovered by Hermann Kobold on May 12, 1896 .