Compression of ephemerides

Astronomy and Astrophysics – Astronomy

Scientific paper

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Algorithms, Astronomical Coordinates, Chebyshev Approximation, Planet Ephemerides, Computer Programs, Orbital Position Estimation, Polynomials, Position Errors

Scientific paper

An algorithm is proposed for generating sequences of Chebyshev series which are the best approximations of an astronomical ephemeris in the sense of Chebyshev over large intervals of time. The criterion for a polynomial approximation of a function to be the best polynomial approximation of the function is that the error function present certain rippling characteristics as described by Remez (1957). General features of the program in PL/1 are described.

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