NGC 7747
| Galaxy NGC 7747 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Pegasus |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 23 h 45 m 32.2 s |
| declination | + 27 ° 21 ′ 39 ″ |
| Appearance | |
| Morphological type | (R ') SB (s) b |
| Brightness (visual) | 13.6 mag |
| Brightness (B-band) | 14.4 mag |
| Angular expansion | 1.5 '× 0.5' |
| Position angle | 36 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.025658 ± 0.000033 |
| Radial velocity | (7692 ± 10) km / s |
|
Stroke distance v rad / H 0 |
(352 ± 25) x 10 6 ly (107.9 ± 7.6) Mpc |
| history | |
| discovery | Edouard Stephan |
| Discovery date | September 23, 1873 |
| Catalog names | |
| NGC 7747 • UGC 12772 • PGC 72328 • CGCG 477-003 • MCG + 04-56-005 • 2MASX J23453226 + 2721393 • LDCE 1595 NED006 | |
NGC 7747 is a barred spiral galaxy of the Hubble type SBb in the constellation Pegasus in the northern sky . It is estimated to be 352 million light years from the Milky Way .
The object was discovered by Edouard Stephan on September 23, 1873 .