Δe dynamical maps, each drawn for a grid of initial conditions in the (Ω₀/n, e) plane, with angles such that qσ = π (left panels) and qσ = π/2 (right). As before, we assume a mass anomaly characterized by $\overline{\mu }$ = m₁/m_c = 10⁻². Top panels: results for the 1/2 SOR. Bottom: results for the 1/3 SOR. The color-code indicates the maximum value of Δe attained in the integration time (T = 200 yrs). Black curves are the semi-analytical estimations of both sets of separatrices; those associated with symmetrical solutions are plotted in the left panels; while those encompassing asymmetrical solutions are shown in the right. Red lines correspond to the locus of zero-amplitude libration points, again with the symmetric ones on the left and asymmetric ones on the right. The different resonant domains (near-resonant, symmetric resonant, and asymmetric resonant) are identified with the aid of inlaid labels.