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International Astronomical Union
Commission 4 : (Ephemerides)


The current home web site for Commission 4 is

* http://iaucom4.org/index.html


Observational Data for Planetary and Lunar Ephemerides

(Measurements to which the ephemerides are adjusted)

* Data located at the CalTech/Jet Propulsion Laboratory, Pasadena
* Data located at the Bureau des Longitudes, Paris


Observational Data for Planetary Satellite Ephemerides

* Data located at the CalTech/Jet Propulsion Laboratory, Pasadena This page was last updated on 09 October 2012

Send comments to William.Folkner@jpl.nasa.gov