Semimajor axis and eccentricity evolution for the same data as in Fig. 3, with the same color-coding. Planetesimals formed at Jupiter’s gap edge are plotted in the top panels, and planetesimals formed at Saturn’s gap edge are plotted in the bottom panels. Left: evolution of the planetesimals semimajor axis (thick colored lines), perihelion, and aphelion (thin colored lines). The semimajor axes, perihelia and aphelia of Jupiter and Saturn (thick and thin black lines) are included as well. Right: eccentricity and semimajor axis tracks, with dots to mark 100 kyr of evolution.The black lines mark the perihelia of Jupiter and Saturn.