It is about nine-tenths of a second.

Hence this star is almost two hundred and thirty thousand times as far from us as the sun.
Seen from it, if the sun were even large enough to fill the whole orbit of the earth, or one hundred and eighty million miles in diameter, he would be a mere point.

With its companion, it revolves round their common centre of gravity in eighty-one years, and hence it would seem that their conjoint mass is less than that of the sun.
The star 61 Cygni is of the sixth magnitude.

Its parallax was first found by Bessel in 1838, and is about one-third of a second.

The distance from us is, therefore, much more than five hundred thousand times that of the sun.