The strong stability of most natural motions |
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Authors: | C Marchal |
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Institution: | Office National d''Etudes et de Recherches Aérospatiales (ONERA), 92320 Châtillon, France |
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Abstract: | Problems of Hamiltonian Mechanics can generally be simplified by some Von Zeipel transformations which reduce the influence of short period parameters and lead to very slowly variable functions: the “quasi-integrals”; however these transformations are implicit and then difficult to use.An explicit construction of the quasi-integrals is presented here and is used to integrate the motion of an artificial satellite perturbed by the zonal harmonics of the Earth gravitational potential; the quasi-integrals are also used to obtain informations on the stability of natural satellites, i.e. lower bounds on the duration of escape or capture. |
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