Earth-moon system: Dynamics and parameter estimation; numerical considerations and program documentation

Details Earth-moon system: Dynamics and parameter estimation; numerical considerations and program documentation Earth-moon system: Dynamics and parameter estimation; numerical considerations and program documentation

Jul 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976odun.reptq....b&link_type=abstract

Semiannual Progress Report, 17 Aug. 1975 - 17 Feb. 1976 Old Dominion Univ., Norfolk, VA.

Physics

Computer Programs, Earth-Moon System, Equations Of Motion, Apollo Project, Earth Rotation, Inertia, Interferometry, Laser Range Finders, Lunar Gravitation, Lunar Rangefinding, Lunar Rotation, Numerical Integration

Scientific paper

Major activities included coding and verifying equations of motion for the earth-moon system. Some attention was also given to numerical integration methods and parameter estimation methods. Existing analytical theories such as Brown's lunar theory, Eckhardt's theory for lunar rotation, and Newcomb's theory for the rotation of the earth were coded and verified. These theories serve as checks for the numerical integration. Laser ranging data for the period January 1969 - December 1975 was collected and stored on tape. The main goal of this research is the development of software to enable physical parameters of the earth-moon system to be estimated making use of data available from the Lunar Laser Ranging Experiment and the Very Long Base Interferometry experiment of project Apollo. A more specific goal is to develop software for the estimation of certain physical parameters of the moon such as inertia ratios, and the third and fourth harmonic gravity coefficients.

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