Compressed planetary and lunar ephemerides

Details Compressed planetary and lunar ephemerides Compressed planetary and lunar ephemerides

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988cemec..45..311k&link_type=abstract

Celestial Mechanics, Volume 45, Issue 1-3, pp. 311-316

Physics

Scientific paper

A package of FORTRAN software has been developed which provides planetary and lunar positions, with respect to the solar system barycenter, for all times in the interval 1801 2049; positions agree to 1 milliarcsecond with those generated by Jet Propulsion Laboratory Development Ephemeris 200 (DE200). The system consists of approximately 800 kilobytes of ephemeris files and 40 kilobytes of programs, totalling 5% of the storage required by DE200. After removal of reference orbits, segments of DE200 positions were fitted by finite Chebyshev series of degree 40. The Chebyshev coefficients were rounded to integer multiples of a suitable unit and packed to form the ephemeris files.

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