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Published online by Cambridge University Press: 12 April 2016
In the frame of the gravitational restricted three-body problem, we study by numerical simulation the retrograde satellites -and their stability-at large distance. In the circular plane case, the stable satellites mostly surround (in the phase-space X°-V°) the characteristic of a family of single-periodic orbits where this family is stable, and librates (in the physical space) around a curve which corresponds to the nearest (in the phase-space X°-V°) periodic orbit. An analytical analysis of this libration is made for Hill’s case. The beginning of the study of the three—dimensional orbits is presented.