Perturbations of a spheroidal satellite due to direct solar radiation pressure

Physics

Scientific paper

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Radiation Pressure, Satellite Perturbation, Solar Radiation, Acceleration (Physics), Algorithms, Celestial Mechanics, Equations Of Motion, Orbital Elements, Satellite Orbits, Spherical Shells, Spheroids

Scientific paper

A variation of the approach developed by Aksnes (1976) is used to present a semianalytical algorithm for evaluating the perturbations of Keplerian orbital elements by direct solar radiation on a spheroidal satellite. The perturbations are obtained by summing over the sunlit part of each orbit and allowing for a linear variation in phase angle. The algorithm is applied to determine the orbital accelerations of the balloon satellite 1963-30D due to direct solar radiation pressure. Comparison of the results with observed values over two separate periods of the satellite's lifetime shows that the orbital accelerations can be closely simulated by assuming a rotating force in the plane at right angles to the sun-satellite direction and employing a phase relation to determine the direction of this force.

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