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Abstract: Newtonian gravity and general relativity give exactly the same expression forthe period of an object in circular orbit around a static central mass.However, when the effects of the curvature of spacetime and solar radiationpressure are considered simultaneously for a solar sail propelled satellite,there is a deviation from Kepler-s third law. It is shown that solar radiationpressure affects the period of this satellite in two ways: by effectivelydecreasing the solar mass, thereby increasing the period, and by enhancing theeffects of other phenomena, rendering some of them detectable. In particular,we consider deviations from Keplerian orbits due to spacetime curvature, framedragging from the rotation of the sun, the oblateness of the sun, a possiblenet electric charge of the sun, and a very small positive cosmologicalconstant.



Autor: Roman Ya. Kezerashvili, Justin F. Vazquez-Poritz

Fuente: https://arxiv.org/



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