The period of this binary appears to be about 540 years.

To find 61 Cygni note that [epsilon] and [delta] Cygni form the diameter of a semicircle divided into two quadrants by [alpha] Cygni (Arided).

On this semicircle, on either side of [alpha], lie the stars [nu] and [alpha] Cygni, [nu] towards [epsilon].

Now a line from [alpha] to [nu] produced passes very near to 61 Cygni at a distance from [nu] somewhat greater than half the distance of [nu] from [alpha].
The star [mu] Cygni lies in a corner of the constellation, rather farther from [zeta] than [zeta] from [epsilon] Cygni.

A line from [epsilon] to [zeta] produced meets [kappa] Pegasi, a fourth-magnitude star; and [mu] Cygni, a fifth-magnitude star, lies close above [kappa] Pegasi.