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Published online by Cambridge University Press: 25 April 2016
The Commission has established its own website (http://ssd.jpl.nasa.gov/iau-comm4/) containing the following main topics:
Information
Where to Obtain Ephemerides
Recent Papers and Information Related to Ephemerides
Observational Data
(Measurements to which the ephemerides are adjusted)
Commission 4 Personnel
Commission 4 Activity
The Commission presently has 88 full members and 3 consultants.