IC 3646
| Galaxy IC 3646 |
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|---|---|
![IC 3646 & IC 3644 (u) [1]](https://de.wikipedia.org/wiki/Datei:IC3646_-_SDSS_DR14.jpg)
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| IC 3646 & IC 3644 (u) | |
| AladinLite | |
| Constellation | Berenike's hair |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 40 m 38,500 s |
| declination | + 26 ° 31 ′ 34.32 ″ |
| Appearance | |
| Morphological type | S0 / HII |
| Brightness (visual) | 14.6 mag |
| Brightness (B-band) | 15.4 mag |
| Angular expansion | 0.70 '× 0.3' |
| Position angle | 90 ° |
| Surface brightness | 12.8 mag / arcmin² |
| Physical data | |
| Redshift | 0.021592 ± 0.000053 |
| Radial velocity | 6473 ± 16 km / s |
|
Stroke distance v rad / H 0 |
(289 ± 20) x 10 6 ly (88.7 ± 6.2) Mpc |
| history | |
| discovery | Max Wolf |
| Discovery date | March 23, 1903 |
| Catalog names | |
| IC 3646 • PGC 42478 • CGCG 159-049 • MCG + 05-30-053 • KUG 1238 + 268 • 2MASX J12403850 + 2631336 • | |
IC 3646 is a lenticular galaxy of the Hubble type S0 with extensive star formation regions in the constellation Coma Berenices in the northern sky . It is an estimated 289 million light years from the Milky Way and about 60,000 light years in diameter. Presumably it forms a gravitationally bound galaxy pair together with IC 3644 .
In the same area of the sky are u. a. the galaxies IC 3632 , IC 3640 , IC 3641 , IC 3642 .
The object was discovered by Max Wolf on March 23, 1903 .