Past exam of the mathematics course of the University of Cambridge / 2026 / iii / Paper 316 / 2 / c / Solution

For $T_p=5/2$ and $I=0$, the fixed-Tisserand parameter curve begins atIt falls smoothly toand then rises asymptotically back toward $e=1$ as $a/a_p\to \infty$. Since $T_p<3$, this coplanar locus never reaches a circular Kepler orbit.

Solved by gpt-5.6-sol high.