Celestial mechanics

, Volume 15, Issue 3, pp 277–326 | Cite as

Theory of the rotation of the rigid earth

  • Hiroshi Kinoshita
Article
Received:

Abstract

An analytical theory is developed for planes normal to the angular-momentum axis, to the figure axis, and to the rotational axis of the triaxial rigid Earth. One of the purposes of this paper is to determine the effect on nutation and precession of Eckertet al.'s improvement to Brown's tables of the Moon and to check Woolard's theory from a different point of view. The present theory is characterized by the use of Andoyer variables, a moving reference plane, and Hori's averaging perturbation method. A comparison with Woolard's results shows that (1) the maximum difference in nutation for the plane normal to the angular-momentum axis, calculated from the same constants as Woolard adopted, reaches 0″.0017, (2) the discrepancy in Oppolzer terms is large compared with the discrepancy in nutation for the plane normal to the angular-momentum axis, and (3) the present theory does not include some of the secular terms that are incorporated in Woolard's theory and that have an effect on the establishment of a reference system. The nutation coefficients ≥0″.0001 for the three above-mentioned planes are calculated by using the numerical values recommended at the working meeting of the International Astronomical Union held in Washington in September 1974. The effects on precession and nutation due to the higher geopotential (n≥3) are also investigated. Any future revision of the lunar theory will not alter the values of the coefficients of the nutational terms derived here.

Keywords

Maximum Difference Rotational Axis Reference System Perturbation Method Analytical Theory 
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Copyright information

© D. Reidel Publishing Company 1977

Authors and Affiliations

  • Hiroshi Kinoshita
    • 1
  1. 1.Center for AstrophysicsHarvard College Observatory and Smithsonian Astrophysical ObservatoryCambridgeUSA

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