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Laplace radius

(rL)
(a radius for a stable orbit of a satellite around a planet)

A Laplace radius (rL) is a limit on a radius of an orbit around a planet, above which the star can make the orbit unstable due to the Kozai mechanism.

rL5 = J2R2a3(1-e2)3/2M/MStar

Where:


(dynamics,secular,orbits,radius,limit)
http://arxiv.org/pdf/1212.0028.pdf
https://books.google.com/books?id=CX8XDQAAQBAJ&lpg=PA54&ots=zn4kmiRuv3&dq=%22laplace%20radius%22%20goldreich&pg=PA54#v=onepage&q=%22laplace%20radius%22%20goldreich&f=false

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