(a) The cumulative distribution of s_2ω is shown for observed LPCs (thick lines) and simulated LPCs from the TIDE simulation (thin lines). LPCs are split into dynamically new comets (a > 10⁴ au; blue) and returning comets with 10³ au < a < 10⁴ au (orange). For the TIDE simulation we also show distributions if we reweight our results assuming an initial density profile proportional to a⁻¹ (dashed lines). All simulated LPCs are also weighted according to their fading probability given in Equation (1). (b) The p-value comparing s_2ω values (solid blue) of observed new comets with simulated new comets from reweighted TIDE simulations is plotted against the value of γ (n ∝ a^γ) assumed in our reweighting. We also plot the p-values comparing original semimajor axes of observed and simulated new comets. We perform comparisons to fitted observed comet orbits that consider nongravitational forces (dashed–dotted blue) and that exclude nongravitational forces (dashed blue). (c) The fraction of LPCs with s_2ω < 0 is plotted against the γ value used in simulation reweighting. Fractions are shown for new LPCs (blue) and young returning LPCs (orange). Horizontal dashed lines mark the observed fractions.