Top: radially dependent pitch angle for S1 (red line). Negative values tend to the left of the tangent and positive to the right. Overplotted in black is the Rafikov pitch angle model based on Equation (8) for a planet located at 125 au with (h/r)_p=0.05. Bottom: polar co-ordinate plot showing azimuthal angular separation of S1 and S2. Red represents S1, green is S2, the solid line gives the central measured values, and the dashed lines function as regions covered by error in radial position. The dotted lines mark the angular separations at the positions pertaining to fits for translating separation into mass.