Value of α against e_max for three different binary periods for the same mass and binary eccentricity. In this case i_p = 0^° and the parameters of the secondary are e₂ = 0.6 and m₂ = 0.66. It can be seen that the difference between the critical semimajor axis when the particles become unstable is not significantly different between 300 (red plot), 1000 (black plot) and 10 000 binary periods (blue plot).