NGC 6811

Alt. Designations: NGC 6811
Object Type: open cluster
Constellation: Cygnus
Distance: 3.4 kly
Right Ascension: 19h 37m 18.0s
Declination: +46° 23´ 18"
Visual Magnitude: 6.8
Apparent Dimension: 15.0´ Dia.
Best Month To View: Jul

NGC 6811 in the constellation Cygnus is a cluster comprised of approximately 70 member stars which are of uniform brightness and very well detached from the background sky. The cluster spans 15 arc-minutes in diameter or half the apparent diameter of the full moon. Depending on the source, the cluster lies between 2940 and 3960 light-years away (heliocentric distance) with an intermediate age of approximately 700 million years old and as evidenced by the presence of some red giants and predominance of white hot stars in this image.