The Authors - Swiss Ephemeris

not logged in - Login

The Authors

Navigation in English, content of page 'swephauth_e.htm' not yet translated. Volunteers welcome.

Swiss Ephemeris

Ephemeris birth chart

The Authors

Mailing list and contact

Price list and ordering

Test Page

General Documentation

Programmer's Documentation

Public License

Professional License English

Professional License German

Printable 3200 year ephemeris files

Download Area

Special purpose lists

The Authors of the Swiss Ephemeris

Dieter Koch (June 4, 1959), lic.phil., graduated in 1984 from Zurich University with a masters degree in Philosophy, Sanskrit and Classical Greek. Studies in astrology and astronomy since 1987. In 1995, Dieter joined Astrodienst and has worked since as a programmer on the Swiss Ephemeris and several other projects of Astrodienst.
Dieter has published articles in astrology magazines in several countries and written a book on the Centaur planet Pholus: Pholus - Wandler zwischen Saturn und Neptun, Chironverlag, Mössingen, 1995 (Pholus, Wanderer between Saturn and Neptune).

Alois Treindl (March 7, 1950), founder and director of Astrodienst AG, graduated in 1981 from ETH Zurich with a doctorate in Physics. He created the planetary calculation package PLACALC in 1988. In 1993 he started designing the Swiss Ephemeris project, which went under full steam in 1996 and was released in September 1997. These planetary calculation routines are used by many astrological programmers in the world. Alois is best known for the Astro*Intelligence Reports he developed jointly with Liz Greene. He lives in Meilen, Switzerland and from time to time on the Big Island of Hawaii.

on Millennium eve

(The scientific contributors below are not involved in astrology in any respect.)

Myles E. Standish, JPL Laboratory, of NASA, Pasadena
Dr. Standish is the head of the JPL ephemeris project upon which the Swiss Ephemeris is based. He has been very helpful in providing releases of his data and valuable advise. He also gave permission to include the JPL data files in the distribution of the Swiss Ephemeris.

Steve Moshier
specializes in high precision numerical computation. He has made available a lot of astronomical software to the public on his website. Astrodienst has licensed some of his code for the Swiss Ephemeris project and uses his numerical integration programs for computing asteroid orbits and extended planetary ephemerides.

Peter Kammeyer
developed the compression techniques which we have used for reducing the volume of the JPL data from 200 Mb to 18 Mb while keeping a precision of 0.001 arcsec.

Other authors whose data we have used are mentioned in the various documentation files or in the source files.

Send page