Panels 1 and 2 show the nodal precession rates of a planetesimal with semi-major axis at a_i = 13.3 AU (panel 1) and a_i = 6.2 AU (panel 2). Shown are the contributions of the disc gravity (red line), binary companion (green line), gas drag (blue line) and total rate (black line). In panels 5 and 6 we also show the rates of inclination change with respect to the binary and disc midplane respectively for the inner particle. In panels 3 and 4 the trajectory of the tip of the particle’s angular momentum vector is shown projected onto the (Ω_i − Ω_d, α_i − α_d) plane for the outer (panel 3) and inner particle (panel 4).