The coefficient tables used by the website are derived from Planetary theories in rectangular and spherical variables-VSOP 87 solutions by Pierre Bretagnon, Pierre, and Gérard Francou and published in Astronomy and Astrophysics, vol. 202, Aug. 1988, p. 309-315. The VSOP87C (Heliocentric ecliptic rectangular coordinates) tables are used.

The original solution tables are available by FTP.

km [ AU] from sun

speed: km/s

acceleration: mm/s^{2}

km [ AU] from

relative speed: km/s

relative acceleration: mm/s^{2}

km [ AU] from

relative speed: km/s

relative acceleration: mm/s^{2}

km [ AU] from

relative speed: km/s

relative acceleration: mm/s^{2}

km [ AU] from

relative speed: km/s

relative acceleration: mm/s^{2}

km [ AU] from

relative speed: km/s

relative acceleration: mm/s^{2}

km [ AU] from

relative speed: km/s

relative acceleration: mm/s^{2}

km [ AU] from

relative speed: km/s

relative acceleration: mm/s^{2}

Planet | Estimated accuracy |
---|---|

Mercury | <5 km |

Venus | <5 km |

Earth | 6 km |

Mars | 12 km |

Jupiter | 70 km |

Saturn | 160 km |

Uranus | 330 km |

Neptune | 310 km |