NGC 6791
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| SDSS recording, angle of view 13 '× 13' | |
| AladinLite | |
| Constellation | lyre |
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Position equinox : J2000.0 |
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|---|---|
| Right ascension | 19 h 20 m 53.2 s |
| declination | + 37 ° 46 ′ 19 ″ |
| Appearance
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| classification | II3r |
| Brightness (visual) | 9.5 likes |
| Brightness (B-band) | 10.52 mag |
| Angular expansion | 10 ' |
| Redness ( excess color E (BV)) | 0.153 |
| Physical data
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| Affiliation | Milky Way |
| Redshift | (−0.000157 ± 0.000020) |
| Radial velocity | (−47 ± 6) km / s |
| distance | 13,300 ly (4100 pc ) |
| Age | 8 billion years |
| Metallicity [Fe / H] | +0.15 |
| history | |
| Discovered by | FAT Winnecke |
| Discovery time | December 1853 |
| Catalog names | |
| NGC 6791 • C 1919 + 377 • OCl 142 • Lund 886 • GC 4492 • Berkeley 46 | |
NGC 6791 is an open star cluster in the constellation Lyra , which is approximately 13,300 light years from Earth . The star cluster is about 8 billion years old. However, recent studies with the Hubble Space Telescope reveal two other generations of stars, which are around 4 and 6 billion years old.
The open star cluster NGC 6791 was discovered in December 1853 by the German astronomer Friedrich August Theodor Winnecke .
Web links
Commons : NGC 6791 - collection of images, videos, and audio files
- Hubble Space Telescope
- DSS Images for NGC 6700 through NGC 6799
- Spektrum.de : Amateur recordings [1]