Alfonsine Tables

The Alfonsine tables (Spanish: Tablas alfonsíes) (sometimes spelled Alphonsine tables) provided data for computing the position of the Sun, Moon and planets relative to the fixed stars.

The tables were named after Alfonso X of Castile, who sponsored their creation, they were compiled in Toledo, Spain. They contain astronomical data starting on January 1, 1252, the date of the coronation of the King.