NGC 2689
| Galaxy NGC 2689 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Big Bear |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 08 h 55 m 25.4 s |
| declination | + 49 ° 06 ′ 56 ″ |
| Appearance | |
| Morphological type | S0 |
| Brightness (visual) | 16.3 mag |
| Brightness (B-band) | 17.3 likes |
| Angular expansion | 0.3 ′ × 0.2 ′ |
| Position angle | 102 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.053725 ± 0.000012 |
| Radial velocity | (16106 ± 4) km / s |
|
Stroke distance v rad / H 0 |
(721 ± 51) · 10 6 Lj (221.0 ± 15.5) Mpc |
| history | |
| discovery | RJ Mitchell |
| Discovery date | March 11, 1858 |
| Catalog names | |
| NGC 2689 • PGC 25042/2333935 • 2MASX J08552536 + 4906557 • | |
NGC 2689 is a lenticular galaxy of the Hubble type S0 in the constellation Great Bear . It is estimated to be 721 million light years from the Milky Way . In the same area of the sky are the galaxies NGC 2684 , NGC 2686 , NGC 2687 and NGC 2688 .
The object was discovered by RJ Mitchell on March 11, 1858 .