SMART97, rigid Earth rotation new solution (Bretagnon+ 1998)

Details SMART97, rigid Earth rotation new solution (Bretagnon+ 1998) SMART97, rigid Earth rotation new solution (Bretagnon+ 1998)

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ycat..33290329b&link_type=abstract

VizieR On-line Data Catalog: J/A+A/329/329. Originally published in: 1998A&A...329..329B

Physics

Earth, Positional Data

Scientific paper

The Earth rotation solution SMART97 (Solution du Mouvement de l'Axe de Rotation de la Terre) is an analytical solution of the Earth rotation in the rigid case. It gives the expressions of precession-nutation and rotation of the Earth for the 3 Euler angles ψ, ω, φ as well as for the quantities p, ɛ, χ, and the sidereal time. For the axis of figure (fig), these 7 quantities are given in the dynamical system (dyn) and in the kinematical system (kin). SMART97 also gives the variables ψ and ω, in the dynamical system, for the differences (axis of figure - axis of rotation) (rot) and (axis of figure - axis of the angular momentum) (ang). The accuracy of the solution is better than 2.2 microarcseconds for all these variables over 20000 days, between 1968 and 2023. A program EXAMPLE (Fortran 77) is provided which makes use of the subroutine SMART97 which substitutes the time in the series of the solutions SMART97. (18 data files).

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