Abstract
At the Seventeenth IAU General Assembly in Montreal, Canada, in 1979, the resolution was passed adopting the 1979 Nutation Series, which was based on : — the development of the rigid theory by Kinoshita (1977); — the modifications to this theory allowing for the effects of a fluid core and an elastic shell (Molodensky, 1961). The purpose of this action has been nothing but the adoption of a working Standard on Nutation. The details that follow are well known (Seidelmann, 1980). After a discussion at IAU Colloquium N°56 in Warsaw, Poland, in 1980, the Working Group on Nutation decided to recommend a change to the 1980 IAU Nutation Series, which is based on the theory developed by Wahr (1980). The differences between the above mentioned Series are within the limits of ±0.002 and are not detectable with the present observational accuracy. As an example, we summarized in Table 1 the observed amplitudes of circular nutation component \( 2{{L}_{\mathbb{C}}} - \alpha \) which were determined from astronomical observations with best accuracy. The effect of 01-tide on this component is taken into account by using the theoretical tide with Λ=l+ k–l=1.2. The theoretical amplitudes of this component were reduced to the mean epochs of observations.
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Yatskiv, Y.S., Molodensky, S.M. (1982). On the Accuracy of the 1980 IAU Nutation Series. In: Calame, O. (eds) High-Precision Earth Rotation and Earth-Moon Dynamics. Astrophysics and Space Science Library, vol 94. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7807-2_32
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DOI: https://doi.org/10.1007/978-94-009-7807-2_32
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