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Introduction of JD 3 ON 'PRECESSION, NUTATION AND ASTRONOMICAL CONSTANTS IN THE DAWN OF THE 21ST CENTURY'
Highlights of Astronomy
Due to the adoption of the new International Celestial Reference Frame (ICRF), the Earth's Ori-entation Parameters (EOP) will be revised and their definitions will need to be re-examined and clarified. This implies that precession/nutation formulation will be also revised in the future. The precession/nutation theories for a non-rigid Earth suffer from a lack of dissipation in the core and from a mismodeling of the ocean and of the atmospheric effects. The scientific community is examiningdoi:10.1017/s153929960002030x fatcat:bccwz5qvivbulamqsb37owofbe