|Planetary Ephemeris Programs in PHP|
These programs provide basic, but very accurate planetary ephemerides (almanacs) based on the NASA/JPL DE405 Ephemeris Model. They span the 600-year period from 1600 to 2200 and cover the sun, moon, all the planets and Pluto.
The IAU 1980 nutation series and the NASA polynomial approximations for the Delta T (ΔT) estimate resolved to the nearest second are applied to the computations.
For All Bodies Theoretical Accuracy _______________ ____________________ Time TT ±1 sec Right Ascension ±0.001 sec Declination ±0.01" ______________________________________ For the Moon Distance ±0.001 km ______________________________________ The solar system bodies covered are: Sun Moon Mercury Venus Mars Jupiter Saturn Uranus Neptune Pluto ______________________________________
Jay Tanner - 2018