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1995•The Astronomical JournalRequires access

Planetary-Induced Nutation of the Earth: Direct Terms

James Gordon Williams

Open publisher page 21 citations

Abstract

Small torques by the planets can alter the direction of the Earth's rotation axis in space. These direct planetary-induced nutations have been computed using a numerical technique. 62 nutation terms with periods between 0.2 and 883 yr are presented. The maximum nutation is 0.5 marcsec. Also given are planetary-induced rates and accelerations of precession and obliquity.

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What this paper is about

Small torques by the planets can alter the direction of the Earth's rotation axis in space. These direct planetary-induced nutations have been computed using a numerical technique. 62 nutation terms with periods between 0.2 and 883 yr are presented. The maximum nutation is 0.5 marcsec. Also given are planetary-induced rates and accelerations of precession and obliquity.

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Available abstract

Small torques by the planets can alter the direction of the Earth's rotation axis in space. These direct planetary-induced nutations have been computed using a numerical technique. 62 nutation terms with periods between 0.2 and 883 yr are presented. The maximum nutation is 0.5 marcsec. Also given are planetary-induced rates and accelerations of precession and obliquity.

Key concepts: Nutation, Physics, Planet, Celestial mechanics, Precession, Rotation (mathematics), Earth's rotation, Astronomy

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