The student should note especially the strange gap between α, γ, and ε cygni.
The two nearest fixed stars are Alpha Centauri and 61 cygni.
Bessel had anticipated him with the parallax of 61 cygni by just two months.
One star, known as 61 cygni, was then and is now rushing along at the rate of 100 miles every second.
Alpha Centauri, then, is four and one-third light-years distant, and 61 cygni seven and one-fifth light-years away.
Such a star is the faint, sixth-magnitude star, 61 cygni, one of the nearest of all the stars.
In 1812 Bessel measured with it the angle between the components of the double star 61 cygni and observed the great comet of 1811.
Again, with reference to χ cygni, he says, “The stars here also are remarkably uniform in size.”
The double star 61 cygni, in fact, is displaced very nearly as much in one year as Alcyone with its train in one hundred.
The bright spot between β and γ cygni is due to relatively bright stars.