Distribution of the pre-flyby eccentricity of C/2024 L5 (ATLAS). Top panel :values of the pre-flyby eccentricity (color-coded) as a function of the input values of (q, e) at t = 0. Median values are shown as continuous (green for e, orange for q) lines, 16th and 84th percentiles as dashed lines. Bottom panel: distribution of the computed pre-flyby eccentricity. The median is displayed as a continuous red line, 16th and 84th percentiles as dashed lines, 0.70±0.02.