Effects on the nutation of C_4,m and S_4,m Harmonics

Authors: Folgueira, marta¹; Souchay, Jean²; Kinoshita, Hiroshi³

Source: Celestial Mechanics and Dynamical Astronomy, Volume 70, Number 3, March 1998 , pp. 147-157(11)

Publisher: Springer

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Abstract:

In this paper, we make a study about the influence of the coefficients of the geopotential C_4,m and S_4,m, (m = 1, 2, 3, 4) on the nutation,starting from the Hamiltonian theory as developed by Kinoshita (1977).We obtain ten coefficients larger than 0.05 μ as for the nutation in longitude and six for the nutation in obliquity. The present results are included in the reconstruction of the theory of nutation (REN-2000) at the level of truncation of 0.1 μ as (Souchay et al., 1997).

Keywords: non-zonal degree 4 harmonics; diurnal and subdiurnal nutation

Document Type: Research article

DOI: 10.1023/A:1008383423586

Affiliations: 1: Sección Departamental de Astronomía y Geodesia, Facultad de Ciencias Matemáticas, Universidad Complutense de Madrid, 28040, Madrid, Spain, 2: Observatoire de Paris, 61, avenue de l'observatoire, 75014, Paris, France, 3: Tokyo National Astronomical Observatory, Oosawa 2-21, Mitaka Shi, Tokyo, 181, Japan,