Pure three-body simulations: absolute value of the mean variation in energy, ΔE/E, as a function of the planet’s initial location relative to the truncation radius, a_p,0/R_trunc. The color represents the mean amplitude of the variation in the planet’s semimajor axis, Δa_p/a_p,0. Only simulations where the planet was neither ejected nor accreted by the central star are shown, as such events would lead to significantly larger energy variations and semimajor axis errors.