The planets according to DE404
This archive contains trigonometric series for the motions of the nine planets, adjusted for a best fit to JPL's DE404 Long (3000 B.C. to 3000 A.D) Ephemeris. The series give heliocentric ecliptic coordinates with precision ranging from about 0.1 arc second for the Earth to 1 arc second for Pluto. A supplied example program reads Julian date and prints an ephemeris for all the planets referred to the ecliptic of date. Currently recommended precession formulas (Williams, 1994) are included. These expansions are the ones used in aa-56.zip, above.
plan404.zip