NGC 7733
| Galaxy NGC 7733 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Toucan |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 23 h 42 m 32.9 s |
| declination | -65 ° 57 ′ 23 ″ |
| Appearance | |
| Morphological type | (R'_1) SB (s) bc / Sy2 |
| Brightness (visual) | 13.6 mag |
| Brightness (B-band) | 14.3 mag |
| Angular expansion | 1.3 '× 0.8' |
| Position angle | 107 ° |
| Surface brightness | 13.5 mag / arcmin² |
| Physical data | |
| Redshift | 0.033917 ± 0.000033 |
| Radial velocity | 10.168 ± 10 km / s |
|
Stroke distance v rad / H 0 |
(449 ± 31) · 10 6 ly (137.8 ± 9.6) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | November 2, 1834 |
| Catalog names | |
| NGC 7733 • PGC 72177 • ESO 110-022 • 2MASX J23423294-6557234 • SGC 233947-6614.1 • SUMSS J234233-655721 | |
NGC 7733 is a bar-spiral galaxy with an active nucleus of the Hubble type SBb in the constellation Toucan in the southern sky . It is estimated 449 million light years from the Milky Way and has a diameter of about 175,000 ly. Together with NGC 7734 , it forms an interacting pair of galaxies.
The object was discovered by John Herschel on November 2, 1834 .