NGC 6839
| Asterism | |
|---|---|
| NGC 6839 | |
| Constellation | arrow |
|
Position equinox : J2000.0 |
|
| Right ascension | 19h 54m 33.0s |
| declination | + 17 ° 56 ′ 20 ″ |
| Further data | |
| Angular expansion |
4.0 ' |
| distance |
4600 ly (1410 pc) |
| history | |
| discovery |
Wilhelm Herschel |
| Date of discovery |
August 18, 1784 |
| Catalog names | |
| NGC 6839 • h 2057 • GC 4521 • H VI 16 | |
| Aladin previewer | |
NGC 6839 is an asterism in the constellation Sagitta . It was discovered by Wilhelm Herschel on August 18, 1784 .
Individual evidence
- ↑ NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ SEDS : NGC 6839
- ↑ AL Tadross: A catalog of 120 NGC open star cluster . In: Journal of the Korean Astronomical Society , 44, 2011, pp. 1-11. doi: 10.5303 / JKAS.2011.44.1.1 .
- ↑ Seligman