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Linking the Dynamical Reference frame to the ICRF

Published online by Cambridge University Press:  14 August 2015

E.M. Standish
E.M. Standish*
Affiliation:
Caltech/JPL JPL 301-150; Pasadena, CA 91109 USA. [email protected]

Abstract

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The latest JPL planetary and lunar ephemerides, DE405, are referenced to the International Celestial Reference Frame (ICRF) with an accuracy that approaches 1 mas for the four innermost planets, the sun, and the moon. This has been accomplished mainly by 18 VLBI observations of the Magellan Spacecraft in orbit around Venus. The ephemeris of Jupiter, however, is not well-determined since the various observations are not consistent within each other. The outer four planets continue to rely almost entirely upon optical observations; their ephemeris uncertainties lie in the 100-200 mas range.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 11 , Issue 1: Highlights of Astronomy. As presented at the XXIIIrd General Assembly of the IAU (Part A), 1997 , 1998 , pp. 310 - 312
Copyright
Copyright © Kluwer 1998

References

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