Recovery of quasi-halo orbit missions in case of contingent station-keeping maneuver delay.

The strategy developed by the authors in previous works for recovering halo orbit missions in case of contingent station-keeping maneuver delay is now applied to quasi-halo orbit missions. Monte Carlo trials are used to estimate recovery Δ v costs and their scattering for each delay time. Families of orbits around the Earth–Moon L 1 point are considered. • The problem of quasi-halo orbit mission recovery is considered. • Optimal transfers to the reference and best backup quasi-halo orbits are compared. • The adaptation scheme to the ephemeris model of motion is given. • In the ephemeris model, the results change significantly and depend on the dates. • Best target orbit in the CR3BP model can be not optimal in the ephemeris model. [ABSTRACT FROM AUTHOR]