Mars and Mercury rotation variations from altimetry crossover data: Feasibility study | Zendy

Rosat S. | Zendy; Rosenblatt P. | Zendy; Trinh A. | Zendy; Dehant V. | Zendy

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Mars and Mercury rotation variations from altimetry crossover data: Feasibility study

Author(s) -

Rosat S.,

Rosenblatt P.,

Trinh A.,

Dehant V.

Publication year - 2008

Publication title -

journal of geophysical research: planets

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.67

H-Index - 298

eISSN - 2156-2202

pISSN - 0148-0227

DOI - 10.1029/2008je003233

Subject(s) - mars exploration program , crossover , libration (molecule) , geodesy , planet , estimator , amplitude , mercury (programming language) , physics , geology , astrobiology , computer science , astrophysics , optics , statistics , geometry , mathematics , artificial intelligence , programming language , point (geometry)

Knowledge of the interior structure of terrestrial planets can be achieved by studying the changes of their rotation and orientation in time. We simulate the use of time deviations of altimetry crossover positions to infer information on the nutations of Mars and on the librations of Mercury. The analysis is based on the least squares estimator and uses simulated crossover points. The simulations demonstrate that the use of crossover data improves the estimates of the observed libration amplitude and obliquity of Mercury and allows detecting the nutations of Mars.

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