Schematic diagrams of hypothetical paths (light orange curves) of objects (orange dots) resulting from an initial velocity (orange arrows) completely in the azimuthal (left panel) or negative radial (central panel) direction. The shown initial velocity vectors and paths are merely qualitative estimates of possible paths that potentially contribute to the initial acceleration of v_R (as found in Fig. 5). In Fig. 9, we show examples of orbits that are a result of initial velocities in these directions.