We know that Kepler-Newton type 2 body systems have elliptical orbit solutions. That is it forms a closed ellipse. However sometimes this ellipse itself can be seen rotating, this is called apsidal precession. We get this precession because gravitational potential energy is modified by an inverse square factor. The gravitational potential is modified due to some reason, for example presence of a third mass, asymmetries in the mass distribution of the massive object, etc.
PS: In some places where i should have mentioned apoapsis I have wrongly mentioned semi-major axis. Please bear with it.
Негізгі бет Ideal Apsidal Precession
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