Alfonsine Tables

Timeline

1. 1260–1272Toledo · CastileAlfonso X convened Jewish, Muslim, and Christian scholars to recompute tables of the positions of the sun, moon, and planets based on Arabic astronomy, preserving them in Castilian and Latin versions.
2. 1301–1310Scholarly circles of Castile and Aragon · AragonDuring this period copies of the tables were used in courts, universities, and monasteries for calendar compilation, astrology, and preliminary navigational observation, becoming a standard reference tool for scientific activity in Iberia.
3. 1310–1400Paris and Bologna · ItalyLatin manuscripts spread through the universities of France and Italy, replacing some older Ptolemaic tables and providing a computational basis for 14th-century European astronomy and the subsequent navigational revolution.