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On Precession and Nutation Values

Published online by Cambridge University Press:  12 April 2016

R.O. Vicente
R.O. Vicente*
Affiliation:
Dept. of Applied Mathematics Faculty of Sciences 1294 LisbonPortugal

Abstract

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The results of research on the Earth’s theory of rotation are presented, comparing observed and theoretical values specially for the luni-solar precession and nutation. Investigations of geodynamics show the strong dependence of the nutation values on the adopted model for the structure of the Earth, while the values referring to the precession are not affected as much. The new observational techniques are able to determine some of these values with greater precision than the classical optical techniques, but it is essential that the observations should be done in a systematic and regular way for several decades.

Type
Part 2. Poster Papers
Information
International Astronomical Union Colloquium , Volume 127: Reference Systems , 1991 , pp. 368 - 375
Copyright
Copyright © United States Naval Observatory 1991

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