Low-energy Earth-to-halo transfers in the Earth Moon scenario with Sun-perturbation

In this work, trajectories connecting LEOs with halos around libration points of the Earth–Moon CRTBP are investigated. Suitable first guess solutions are searched linking together the stable manifolds of the halo orbits (of the EM spatial CRTBP) with the Earth-departing trajectories (built in the SE planar CRTBP). As a first step, small discontinuities, in terms of Δv are allowed and bounded through the box-covering approach, implemented with the software GAIO. Then, the first guess solutions are optimized in the bicircular four-body problem: single-impulse and two-impulse transfers are presented and discussed.