Comparison of the pressure-factor (Pf), introduced by Borovička et al. (2022a), and orbital dynamics of the 213 JFC-like fireballs detected by EFN. Subplot a is a histogram plot comparing the Pf values of the fireballs that had greater or less than 50% chance of the particle clones generated within the observational uncertainties of the object achieved at least a perihelion value of 2.5 au during a 10 kyr orbital integration. Subplot b is a scatter plot showing the Lyapunov lifetime of the fireball orbit based on 20 kyr N-body simulations versus the percentage of particle clones that reached q = 2. 5 au at least once.