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The Planet Motion under Effect of Drag Force [vec]F= -e [vec]v

Kamal Mamehrashi


The Dynamical evolution of a binary orbit under drag forces is the major subject of this paper. In this paper we consider the motion of a planet which will be collapsed. The initial equations don't make us analyze it quickly but we can simplify the system equations and study them in binary system with one order. At last we show it in configuration space with using Lie Transforms.


Drag Force, Planet, Configuration Space, Lie Transforms.

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