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Observations of the Celestial Motion of the Earth’s Pole

Published online by Cambridge University Press:  14 August 2015

M. Feissel  and
A.-M. Gontier
M. Feissel
Affiliation:
Central Bureau of IERS, Paris Observatory, CNRS/URA1125 61, avenue de l’Observatoire 75014 Paris, France
A.-M. Gontier
Affiliation:
Central Bureau of IERS, Paris Observatory, CNRS/URA1125 61, avenue de l’Observatoire 75014 Paris, France

Abstract

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The accurate observation of the celestial motion of the Earth’s pole requires careful connection of the VLBI observables with quantities and reference frames related to the theoretical description of precession-nutation models. The analysis of the derived celestial pole offsets beyond the semi-empirical IERS(1996) precession-nutation model shows variability of some components, such as the seasonal term and a ~ 430 day term.

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. 169 - 172
Copyright
Copyright © Kluwer 1998

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