Orbital evolution of a single planetesimal initially located at a_pl,0 = 10.0 AU. Panel a: the same as Fig. C.1a, but for a_pl,0 = 10.0 AU. Panels b and c and d and e: the temporal changes in the resonance angle (see Eq. (C.5)) and in the planetesimal’s semi-major axis relative to the resonance centre, a_c (Eq. (C.2)), respectively, in the 2:1 and 3:2 mean motion resonances (MMRs) with the planet. Panel f: the same as Fig. C.1d, but for the planetesimal with e = 0, 0.1, and 0.5 in the 2:1 MMR. See the caption of Fig. C.1 for details.