NGC 6811 is an open star cluster located in the constellation Cygnus. It was discovered by the astronomer William Herschel in 1786 and is approximately 3,600 light-years away from Earth. The cluster contains around 100 stars and is notable for its relatively young age, estimated to be about 1 billion years. The stars in NGC 6811 are loosely bound together by gravity, allowing them to spread out over a larger area compared to more compact clusters. This cluster is also of interest to astronomers studying stellar evolution and the dynamics of star formation in the Milky Way galaxy.