Simulated parameter space. Parameter-space heatmaps of q (i.e., the ratio of the time between successive apoapsides to the average time to complete a revolution [16,17]) from simulation for typical values µ = 0.01, M_A = 0.35 kg, and r₀ = 0.28 m. White space corresponds to short trajectories with undefined q. Simulated orbits become more zoom-whirl-like as the central force increases. However, a larger MB also results in more frequent crashes with boundaries, leading to a significant size reduction of parameter space with defined q .