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Sun-earth L1 and L2 to moon transfers exploiting natural dynamics

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Abstract

This work examines the design of transfers from the Sun-Earth libration orbits, at the L1and L2points, towards the Moon using natural dynamics in order to assess the feasibility of future disposal or lifetime extension operations. With an eye to the probably small quantity of propellant left when its operational life has ended, the spacecraft leaves the libration point orbit on an unstable invariant manifold to bring itself closer to the Earth and Moon. The total trajectory is modeled in the coupled circular restricted three-body problem. The concept of survivability and event maps is introduced to obtain suitable conditions that can be targeted such that the spacecraft impacts, or is weakly captured by, the Moon. Weak capture at the Moon is studied by method of these maps. Some results for planar Lyapunov orbits at L1and L2are given, as well as some results for the operational orbit of SOHO.

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Van Der Weg, W. J., & Vasile, M. (2016). Sun-earth L1 and L2 to moon transfers exploiting natural dynamics. In Astrophysics and Space Science Proceedings (Vol. 44, pp. 273–292). Kluwer Academic Publishers. https://doi.org/10.1007/978-3-319-23986-6_19

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