The Alfonsine Tables were based on a Ptolomeic (geocentric) model of the solar system. The Prutenic Tables used Coppernicus' heliocentric model of the solar system, but because circular orbits were used, they were no more accurate than the Alfonsine Tables. The Rudolphine Tables were based on a heliocentric model, used accurate data from Tychoe Brahe and Kepler's discovery of elliptical orbits for the planets. They were considerably more accurate than all previous tables.
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