NGC 5522
| Galaxy NGC 5522 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Bear keeper |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 14 h 14 m 50.4 s |
| declination | + 15 ° 08 ′ 49 ″ |
| Appearance | |
| Morphological type | Sb |
| Brightness (visual) | 13.4 mag |
| Brightness (B-band) | 14.2 mag |
| Angular expansion | 1.8 ′ × 0.4 ′ |
| Position angle | 50 ° |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Redshift | 0.015254 +/- 0.000030 |
| Radial velocity | 4573 +/- 9 km / s |
|
Stroke distance v rad / H 0 |
(205 ± 14) x 10 6 ly (62.9 ± 4.4) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | March 19, 1787 |
| Catalog names | |
| NGC 5522 • UGC 9116 • PGC 50889 • CGCG 103-125 • MCG + 03-36-89 • IRAS 14124 + 1522 • GC 3814 • H III 644 • LDCE 1047 NED003 | |
NGC 5522 is a 13.4 mag bright spiral galaxy with an active nucleus of the Hubble type Sb in the constellation Bear Keeper and about 205 million light years from the Milky Way.
It was discovered on March 19, 1787 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as "vF, vS, E, confirmed with 300 power". In his notes he added: “vF, vS, E, 300 confirmed it, but shewed two small round patches united, which seemed to be like vF aberrations of two stars without the stars. I viewed them with many different adjustments of the focus ".