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Planetary Ephemerides

Published online by Cambridge University Press:  12 April 2016

Jay H. Lieske  and
E. Myles Standish
Jay H. Lieske
Affiliation:
Astronomisches Rechen-Institut, Heidelberg, Federal Republic of Germany
E. Myles Standish
Affiliation:
Jet Propulsion Laboratory, Pasadena, California, USA

Abstract

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In the past twenty years there has been a great amount of growth in radiometric observing methods, as well as in classical optical observations. Through radar ranging and Doppler observations of the planets and spacecraft, we have been able to improve our knowledge of the location and motion of the planets by several orders of magnitude and have succeeded in planning and executing space missions which would have been difficult if not impossible to plan and to perform utilizing the classical ephemerides. We will outline the goals and methods employed by the Jet Propulsion Laboratory in its effort to develop improved ephemerides which accurately reflect the motions of planets in an inertial system.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 56: Reference Coordinate Systems for Earth Dynamics , August 1980 , pp. 295 - 304
Copyright
Copyright © Reidel 1981

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