Alfonsine tables

The Alfonsine Tables (Latin: Tabulae Alphonsinae ) were an astronomical work with tables for calculating the position of Sun, Moon and the five classical planets Mercury, Venus, Mars, Jupiter and Saturn, which by order of Alfonso X of approximately 1252-1270 Castile and León was compiled under the direction of the Jewish scholar Yehuda Ben Moses and Isaac Ben Sid in Toledo.

The aim was to correct the Toledans panels. The Alfonsine Tables laid the year determined to 365 days, five hours, 49 minutes and 16 seconds. The work was originally written in Castilian and was later translated into Latin. It was the most influential astronomical work in Europe until it was superseded by the Prutenischen tables of Erasmus Reinhold in the 16th century, which in turn were based on the work De revolutionibus orbium Coelestium of Nicolaus Copernicus. Georg von Peuerbach used planetarum the Alfonsine Tables for his astronomical book Theo Ricae novae.