Long-term orbital tidal evolution of our planet in our Kepler-38-like system. Except for the parameters inlaid in the left-hand plots, all parameters and initial conditions were taken equal to those in Table 1. Light-tone curves for a₂ and e₂ show osculating values while darker curves correspond to mean elements obtained from a digital filter. The magenta curves in the lower panels are the result of a simulation disregarding tidal interaction between the stars.