Ephemeris
EPHEM'ERIS, noun plural ephemer'ides. [Gr.]
1. A journal or account of daily transactions; a diary.
2. In astronomy, an account of the daily state or positions of the planets or heavenly orbs; a table, or collection of tables, exhibiting the places of all the planets every day at noon. From these tables are calculated eclipses, conjunctions and other aspects of the planets.