A common aspect of the practice-oriented side of pre- and early modern mathematical astronomy was the computation of ephemerides, that is, tables that displayed the daily positions of the planets in a synoptic and calendrical format. Even though medieval Europe was no exception in this regard, the existence of ephemerides in this period and region has gone largely unnoticed, owing both to terminological difficulties and the low survival rate of actual specimens. What exists in significant numbers, however, are texts describing different approaches to constructing ephemerides and computing their various entries. The article demonstrates this by discussing ten such texts dating from approximately the middle of the 12th century to just after 1300. Taken in its entirety, this hitherto neglected corpus provides conclusive evidence against a view according to which ephemerides entered European astronomical practice only in the 15th century.

前现代数学天文学和早期实践数学天文学中面向实践的方面的一个共同方面是星历的计算，即，以天气和日历的形式显示行星每日位置的表格。尽管中世纪欧洲在这方面也不例外，但由于术语上的困难和实际标本的低成活率，在此期间和该地区的星历表的存在基本上未被注意到。然而，大量存在的文本描述了构造星历和计算其各种条目的不同方法。本文通过讨论从大约12世纪中叶到1300年左右的十种此类文本来证明这一点。