IC 3644
Galaxy IC 3644 |
|
---|---|
IC 3644 & IC 3646 (o) | |
AladinLite | |
Constellation | Berenike's hair |
Position equinox : J2000.0 , epoch : J2000.0 |
|
Right ascension | 12 h 40 m 36.233 s |
declination | + 26 ° 30 ′ 16.61 ″ |
Appearance | |
Morphological type | S? / HII |
Brightness (visual) | 14.9 mag |
Brightness (B-band) | 15.7 mag |
Angular expansion | 0.90 'x 0.2' |
Position angle | 15 ° |
Surface brightness | 12.9 mag / arcmin² |
Physical data | |
Redshift | 0.022122 ± 0.000060 |
Radial velocity | 6632 ± 18 km / s |
Stroke distance v rad / H 0 |
(296 ± 21) x 10 6 ly (90.8 ± 6.4) Mpc |
history | |
discovery | Max Wolf |
Discovery date | March 23, 1903 |
Catalog names | |
IC 3644 • PGC 42479 • MCG + 05-30-052 • KUG 1238 + 267A • 2MASX J12403619 + 2630207 • 2MASS J12403616 + 2630168 • GALEX ASC J124036.15 + 263018.1 • NSA 141862 |
IC 3644 is a spiral galaxy of the Hubble type Sb with extensive star formation areas in the constellation Coma Berenices in the northern sky . It is an estimated 296 million light years away from the Milky Way and about 80,000 light years in diameter. Presumably it forms a gravitationally bound galaxy pair together with IC 3646 .
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 .