Semi-major axis (au) versus eccentricity distribution of fireballs on JFC-like orbits (i.e., 2 < T_J < 3), where the plot on the right is the dashed-zone on the left plot. The fireball observations for the DFN (blue dots), EFN (red diamonds), FRIPON (green triangle), and MORP (black squares) are shown. The horizontal and vertical bars of the fireball data indicate the 1-σ uncertainties in the semi-major axis and eccentricity. In addition, the 661 JFCs used in this study taken from NASA’s HORIZONS database are also shown as black crosses.