NGC 5697
| Galaxy NGC 5697 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Bear keeper |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 14 h 36 m 32.0 s |
| declination | + 41 ° 41 ′ 09 ″ |
| Appearance | |
| Morphological type | Sb / HII |
| Brightness (visual) | 13.9 likes |
| Brightness (B-band) | 14.7 mag |
| Angular expansion | 1.1 ′ × 0.7 ′ |
| Position angle | 21 ° |
| Surface brightness | 13.5 mag / arcmin² |
| Physical data | |
| Redshift | 0.018158 ± 0.000105 |
| Radial velocity | 5444 ± 31 km / s |
|
Stroke distance v rad / H 0 |
(248 ± 17) · 10 6 ly (76 ± 5.3) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | March 18, 1787 |
| Catalog names | |
| NGC 5697 • IC 4471 • UGC 9407 • PGC 52207 • CGCG 220-033 • MCG + 07-30-31 • IRAS 14345 + 4154 • GC 3952 • H II 675 • h 1853 • LDCE 1071 NED004 | |
NGC 5697 is a 13.9 likes bright spiral galaxy of Hubble type Sb in the constellation Bootes and about 246 million light-years from the Milky Way center. Various signs point to a quasar in its center.
NGC 5697 was discovered on March 18, 1787 by Wilhelm Herschel with an 18.7-inch reflecting telescope, who described it as "F, vS". Due to slight errors in Herschel's position information, Guillaume Bigourdan's second observation on June 6, 1894 under IC 4471 led to an entry in the index catalog .