Note on the generalized Hansen and Laplace coefficients
نویسنده
چکیده
February 2, 2008 Abstract. Recently, Breiter et al.(2004) reported the computation of Hansen coefficients X k for non integer values of γ. In fact, the Hansen coefficients are closely related to the Laplace b (m) s , and generalized Laplace coefficients b (m) s,r (Laskar and Robutel, 1995) that do not require s, r to be integers. In particular, the coefficients X 0 have very simple expressions in terms of the usual Laplace coefficients b (m) γ+2, and all their properties derive easily from the known properties of the Laplace coefficients.
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