NGC 6811
Open cluster in the constellation of Cygnus / From Wikipedia, the free encyclopedia
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NGC 6811 is an open cluster in the constellation of Cygnus,[3] near the constellation of Lyra.[4] It has an angular size half that of the full Moon and includes about 1000 stars[5] of roughly similar magnitude.[3][6] It has also been called "The Hole in the Cluster" because of its dark center.[6][7]
Quick Facts Observation data (2000.0 epoch), Right ascension ...
NGC 6811 | |
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Observation data (2000.0 epoch) | |
Right ascension | 19h 37m 17s[1] |
Declination | +46° 23′ 18″ |
Distance | 3600 ly[2] (1107 pc[2]) |
Apparent magnitude (V) | 6.8 |
Apparent dimensions (V) | 13' |
Physical characteristics | |
Estimated age | 1.00±0.17 Gyr |
Other designations | Cr 402 |
Associations | |
Constellation | Cygnus |
See also: Open cluster, List of open clusters |
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