Long-term resonant behavior of 2023 FW₁₄. Evolution of the relative mean longitude with Mars for the nominal orbit (in black) of 2023 FW₁₄ and those of relevant control orbits in the time interval (−1.5, 25.0) Myr. The control orbits or clones have Cartesian state vectors (see Appendix B) separated +3σ (in green), −3σ (in light-green), +6σ (in orange), −6σ (in gold), +9σ (in red), and −9σ (in pink) from the nominal values in Table B.1. The output time-step size is 5000 yr.