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Virtual Planetarium and other Astronomical Calculation Routines
Virtual Planetarium and other astronomical calculation routines of the Positional Astronomy (Ephemeris Calculation / ISS Visibility / Eclipses / Calendar) --- GUI based on Delphi/Free Pascal, Source Code alternatives based on Python 2.5 and Java 1.6
he JAVA library is designed to read JPL DE/LE ephemerides (DE200, DE405, DE406, DE421, DE422, DE430, DE431, DE440 and DE441) and to calculated the position and velocity of the Sun, Moon, eight major planets and Pluto, also the earth nutations and the lunar librations if they are part of the ephemeris.
Java library to calculate heliocentric and geocentric planetary positions. Two types of calculations are supported: a 'fast' version which has an accuracy of about 1 arc second and a 'full' version that implements the full VSOP87 theory.
SolarJ is a library of ephemeris routines, plotting routines, and applications for displaying features visible on the sun and planets in the solar system.