Short-term evolution of relevant parameters of comets 29P/Schwassmann-Wachmann 1, P/2008 CL94 (Lemmon), and P/2010 TO20 (LINEAR-Grauer), and centaur 2020 MK₄. Results for 29P are shown in the upper left panels, those of P/2008 CL94 are displayed in the upper right panels, the bottom left panels show those of P/2010 TO20, and the bottom right panels focus on 2020 MK₄. For each set of panels, we show the evolution of the distances to Jupiter (top panel) and Saturn (second totop) of the nominal orbit (in black) as described by the corresponding orbit determination in Table 1 and those of control orbits or clones with Cartesian vectors separated +3σ (in blue), −3σ (in cyan), +9σ (in red), and −9σ (in pink) from the nominal values in Appendix C. The Hill radii of Jupiter, 0.338 AU, and Saturn, 0.412 AU, is shown in red. The third panel from the top shows the evolution of the semimajor axis, a. The third panel from the bottom shows the evolution of the eccentricity, e, for the same sample of control orbits. The second panel from the bottom displays the inclination, i. The bottom panel shows the variations in Tisserand’s parameter, T_J, and includes the boundary references 2 (in brown) and 3 (in orange). The output time-step size is 1 yr, and the origin of time is epoch 2459000.5 TDB.