RT Journal Article T1 Effects on the nutation of the non-zonal harmonics of third degree A1 Folgueira López, Marta A1 Souchay, J. A1 Kinoshita, Hiroshi AB In this paper, we calculate the coefficients of the nutation for a rigid Earth model due to the C-3m and S-3m (m not equal 0) harmonics of the geopotential, starting from the Hamiltonian theory as developped by Kinoshita (1977). We show that these coefficients are far from bring negligible as given the level of truncation of 0.1 mu as which is necessary in the reconstruction of the tables of nutation, and also that their value is very close to that given by Bretagnon st al. (1997). PB Kluwer Academic Publisher SN 0923-2958 YR 1998 FD 1998 LK https://hdl.handle.net/20.500.14352/57296 UL https://hdl.handle.net/20.500.14352/57296 LA eng DS Docta Complutense RD 14 dic 2025