earth-moon-system

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Tunisino7 / lunar-free-return

Numerical simulation of Earth–Moon free-return trajectories using RK4 integration, inspired by Apollo 13 and Schwaniger trajectory families.

astrodynamics artemis orbital-mechanics rk4 numerical-simulation orbital-mechanics-simulator restricted-three-body-problem apollo-13 lunar-trajectory earth-moon-system free-return-trajectory

Updated May 11, 2026
Python

Bishwaswarup / cr3bp-manifoldtransfer

Star

Low-energy Earth–Moon transfer design via invariant manifolds of CR3BP halo orbits. Differential correction, pseudo-arclength continuation, Poincaré section intersection search, and ΔV budget. Python + LaTeX paper.

python astrodynamics scientific-computing orbital-mechanics three-body-problem cr3bp halo-orbits trajectory-design space-mission-design earth-moon-system poincare-section invariant-manifolds low-energy-transfer

Updated Aug 23, 2026
Jupyter Notebook

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