Distribution of semimajor axis and eccentricity of the Solar System planetesimals. The distributions are presented at their peak, at the age of 226 Myr. The gray shades give the probability density function (linearly interpolated) for the Solar System that was ejected 20 Myr after the formation of the giant planets. The red curves indicate the influence of Earth (left, the dotted curve for reference), Jupiter (middle), and Neptune (rightmost curve). The two dotted curves around Neptune’s influence indicate the range within 5 Hill radii of Neptune. Top panel: Contours (same interpolation) give the probability density distribution for the Solar System that was isolated for its entire lifetime. Bottom panel: Contours (same interpolation and range) refer to the probability density distribution for the Solar System that remained in the cluster for its entire lifetime.