Relative change in orbital frequency ḟ₀/f₀ induced by the reaction to gravitational radiation for an object of mass μ in circular equatorial orbit around Kerr BH of mass M equal to that of Sgr A* as a function of the orbital radius r₀ (Eq. (36)). Each curve has a vertical asymptote at the ISCO radius for the corresponding value of a. The dotted curve corresponds to the quadrupole approximation and quasi-Newtonian orbits. The inset shows the curves extended upto r₀ = 50 M.