Asteroid Ephemeris Programs in PHP

These programs provide basic, but very accurate asteroid ephemerides (almanacs) based on the U.S. Naval Observatory Asteroid Ephemeris - 1998.  They span the 299-year period from 1800 to 2099 and cover 15 of the major asteroids.

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"

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The asteroid bodies covered are:

Ceres
Cybele
Davida
Eunomia
Europa
Flora
Hebe
Hygiea
Interamnia
Iris
Juno
Metis
Pallas
Psyche
Vesta
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Jay Tanner - 2018