Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-20T03:49:00.691Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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

References

Arias, E.F., Chariot, P., Feissel, M. and Lestrade, J.-F. (1995) The extragalactic reference system of the International Earth Rotation Service, ICRS, Astron. Astrophys., 303, pp. 604–608.Google Scholar
Dehant, V., Feissel, M., Defraigne, P., Roosbeek, F. and Souchay, J. (1997) Could the energy near the FCN and the FICN be explained by lunisolar or atmospheric forcing?, Geophys. J. Int., 130, pp. 535–546.Google Scholar
Herring, T.A. (1991) The ZMOA-1990 nutation series, in “Reference Systems”, Proceedings of the IAU Colloquium 127, eds Hugues, A., Smith, C., Kaplan, G., U.S. Naval Observatory, Washington, pp. 175–166.Google Scholar
IERS (1997) 1996 IERS Annual Report, Observatoire de Paris, Paris, pp. 11–38.Google Scholar
Jacobs, O.S., Sovers, O.J., Gordon, D., Ma, C. and Gontier, A.-M. (1997) The accuracy of the ICRF: an intercomparison of VLBI analysis software, JD 7 this volume.Google Scholar
Kovalevsky, J. and McCarthy, D.D. (1997) Astronomical effects of current changes in fundamental astrometric references, JD 3 this volume.Google Scholar
Lieske, J.H., Lederle, T., Fricke, W. and Morando, B. (1977) Expressions for the Precession Quantities Based upon the IAU (1976) System of Astronomical Constants, Astron. Astrophys., 58, pp. 1–16.Google Scholar
Ma, C., Arias, E.F., Eubanks, T.M., Fey, A.L., Gontier, A.-M., Jacobs, C.S. and Sovers, O.J. (1997) Formation of the ICRF, JD 7 this volume.Google Scholar
Ma, C. and Baver, K.D. (1997) Site Positions and Velocities, and Earth Orientation Parameters from the NASA Space Geodesy Program-GSFC: Solutions GLB1069 and GLB1070, 1996 IERS Annual Report, description available under anonymous ftp:hpiers.obspm.fr.file.iers/annreports/1996AR/gsfc.r Google Scholar
Mathews, P.M. and Herring, T.A. (1997) Observational and Theoretical Modeling of Nutation, JD 3, this volume.Google Scholar
McCarthy, D.D. (ed) (1996), IERS Conventions, IERS technical Note, 21, Observatoire de Paris, Paris, pp. 20–39.Google Scholar
Seidelmann, P.K. (1982) 1980 IAU Theory of Nutation: The Final Report of the IAU Working Group on Nutation, Celestial Mechanics, 27, pp. 79–106.Google Scholar