NGC 7690
| Galaxy NGC 7690 |
|
|---|---|
|
|
| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Phoenix |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 23 h 33 m 02.5 s |
| declination | -51 ° 41 ′ 54 ″ |
| Appearance | |
| Morphological type | Sb / HII |
| Brightness (visual) | 12.4 mag |
| Brightness (B-band) | 13.0 likes |
| Angular expansion | 2.1 'x 0.8' |
| Position angle | 132 ° |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Affiliation | SSRS group-22 |
| Redshift | 0.005074 ± 0.000017 |
| Radial velocity | 1521 ± 5 km / s |
|
Stroke distance v rad / H 0 |
(65 ± 5) x 10 6 ly (20.0 ± 1.4) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | October 3, 1834 |
| Catalog names | |
| NGC 7690 • PGC 71716 • ESO 240-006 • IRAS 23303-5158 • 2MASX J23330254-5141541 • GALEX ASC J233302.63-514153.7 | |
NGC 7690 is a spiral galaxy with extensive star formation regions of the Hubble type Sb in the constellation Phoenix in the southern sky . It is an estimated 65 million light years from the Milky Way and about 40,000 light years in diameter.
The object was discovered on October 3, 1834 by the astronomer John Herschel with his 18.7 inch reflector telescope and was later included in his New General Catalog by Johan Dreyer .
Web links
Commons : NGC 7690 - collection of images, videos, and audio files
