NGC 6209
| Galaxy NGC 6209 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Bird of paradise |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 16 h 54 m 57.6 s |
| declination | -72 ° 35 ′ 12 ″ |
| Appearance | |
| Morphological type | (R ') SAB (rs) b |
| Brightness (visual) | 11.8 mag |
| Brightness (B-band) | 12.6 mag |
| Angular expansion | 2.0 ′ × 1.6 ′ |
| Position angle | 10 ° |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Redshift | 0.019563 ± 0.000033 |
| Radial velocity | 5865 ± 10 km / s |
|
Stroke distance v rad / H 0 |
(256 ± 18) · 10 6 ly (78.4 ± 5.5) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | June 28, 1835 |
| Catalog names | |
| NGC 6209 • PGC 59252 • ESO 43-8 • IRAS 16489-7230 • 2MASX J16545747-7235136 • SGC 164902-7230.3 • GC 4233 • h 3645 • | |
NGC 6209 is a 11.8 mag bright bar spiral galaxy of the Hubble type SBb in the constellation Bird of Paradise in the southern sky . It is an estimated 256 million light years from the Milky Way and about 160,000 light years across.
The supernovae SN 1998cx ( Type Ia ) and SN 2009fz (Type IIb) were observed here.
The object was discovered on June 28, 1835 by John Herschel with an 18-inch reflector telescope, which during two observations “eF, pL, vgvlbM, 2 ′ diameter, quite hopeless, except in the clearest and finest night, and with the mirror bright "and" found in the place, and viewed. It is very visible ... "noted.