Left panel: planet and binary orbital periods, with dashed lines of constant period ratio. Right panel: planet periapse distance and binary apoapse distance, with dashed lines of constant scaled minimum distance, r_min = [a_p(1 − e_p)]∕[a_bin(1 + e_bin)]. Systems with a single detected planet are shown as blue squares, whereas the three-planet Kepler-47 system is shown as grey circles.