Swiss Ephemeris

The SWISS EPHEMERIS is the high precision ephemeral largely based upon the DE406 ephemeris from NASA's JPL.

The Swiss Ephemeris is based upon the latest planetary and lunar ephemeris, DE405/406, developed by NASA's Jet Propulsion Laboratory. The original integration, DE405, covered the years 3000 BC to 3000 AD and required 550 Mb of disk space.