NGC 6789
| Galaxy NGC 6789 |
|
|---|---|
|
|
| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Dragon |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 19 h 16 m 42.1 s |
| declination | + 63 ° 58 ′ 17 ″ |
| Appearance | |
| Morphological type | in the |
| Brightness (visual) | 13.1 mag |
| Brightness (B-band) | 13.7 mag |
| Angular expansion | 1.3 '× 1.0' |
| Position angle | 60 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Redshift | -0.000470 +/- 0.000030 |
| Radial velocity | -141 +/- 9 km / s |
|
Stroke distance v rad / H 0 |
(3 ± 1) x 10 6 ly (1.04 ± 0.19) Mpc |
| history | |
| discovery | Lewis A. Swift |
| Discovery date | August 30, 1883 |
| Catalog names | |
| NGC 6789 • UGC 11425 • PGC 63000 • CGCG 323-011 • MCG + 11-23-001 • 2MASX J19164116 + 6358238 • LEDA 63000 | |
NGC 6789 is an irregular dwarf galaxy from the Hubble type in the constellation Draco the northern sky , the 3 million light years from an estimated Milky Way is removed.
The object was discovered on August 30, 1883 by Lewis A. Swift with his 16-inch telescope and later included in his New General Catalog by Johan Dreyer .
Web links
Commons : NGC 6789 - collection of images, videos, and audio files
