Relativistic variations in Mars rotation

Baland, Rose-Marie;Hees, Aurélien;Yseboodt, Marie;Bourgoin, Adrien;Le Maistre, Sébastien
(2022) Europlanet Science Congress 2022 — Location: Granada (18.September.2022)

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Authors
  • Baland, Rose-MarieRoyal Observatory of Belgium, Uccle, Belgium
    Author
  • Hees, AurélienObservatoire de Paris, Systèmes de Référence Temps-Espace
    Author
  • Yseboodt, MarieRoyal Observatory of Belgium, Uccle, Belgium
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  • Bourgoin, AdrienObservatoire de Paris, Systèmes de Référence Temps-Espace
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  • Le Maistre, SébastienUCLouvain
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Abstract
The orientation of Mars with respect to its orbit can be described with a set of Euler angles (longitude ψ, obliquity ε, and rotation φ). The rotation model for Mars, as described in the Barycentric Celestial Reference System (BCRS), includes two relativistic contributions: (1) a contribution to the precession and nutations in longitude which mainly comes from the Geodetic effect, (2) a contribution to the variations in rotation angle which mainly comes from the reference frame transformation between the local Martian frame and the BCRS frame and their respective time. We present a new estimation of the two relativistic contributions to Mars orientation.
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Baland, R.-M., Hees, A., Yseboodt, M., Bourgoin, A., & Le Maistre, S. (2022). Relativistic variations in Mars rotation. EPSC Abstracts, 16(EPSC2022-911), 2. https://doi.org/10.5194/epsc2022-911 (Original work published 2022)