A Study of Capture trajectories to the vicinity of L1 and L2 points ?? Masaki Nakamiya (Sokendai University), Daniel Scheeres (University of Michigan), Hiroshi Yamakawa (Kyoto University) and Makoto Yoshikawa (JAXA) Abstract We investigate spacecraft capture trajectories to the periodic orbits of the L1 and L2 points in the planar restricted Hill three-body problem are studied. The specific focus is on transfer to these vicinities from interplanetary trajectories. This application is motivated by future plan to use the Sun-Earth and Sun-Mars collinear libration points as space hub for Mars Mission. We utilize stable manifolds for capture trajectories to periodic orbits around the libration points. As a result, the cost of capture into a periodic orbit is also reduced relative to direct capture into a parabolic orbit. The way of linking between interplanetary transfer trajectories and the stable manifold is also discussed.