Alcyone Astronomical Tables (AAT) is a collection of astronomical data in electronic form. It provides detailed information on various astronomical phenomena (conjunctions with the Sun, planetary conjunctions, oppositions, greatest eleongations, lunar phases, equinoxes and solstices, passages of aphelia and perihelia), solar and lunar eclipses covering the period 2000 BC to AD 3000.
AAT offers additional functionality as printing, data export (Excel, HTML, ASCII, CSV), table sorting, and time range specification. The calculation is based upon Steve Moshier's analytical ephemeris using trigonometric expansions for the earth and planets and the lunar ephemeris ELP2000-85 of Chapront-Touzand Chapront for the moon, both adjusted to Jet Propulsion Laboratory's DE404.
Eclipse predictions were performed by Fred Espenak and Jean Meeus (NASA's GSFC). Since all data are pre-calculated and saved in a database, all calculations are very fast.