# How to find orbital radius of star in a binary system using redshift and orbital period data? [duplicate]

I am given the non-redshifted wavelength of the EM radiation from one of the stars, the wavelengths at minimum and maximum redshift, and the interval between minimum and maximum redshift (which is presumably half the orbital period). It is assumed that the stars' orbits are on the same plane as the Earth.

How would one calculate the radius of the given star's orbit?