A website (attempting to find modern Science in religious scriptures) states that
if Earth-Moon system were isolated from Sun's and other planets' gravitationnal influences, Moon's orbit around the Earth would eventually become almost a perfect circle (whereas with the Sun it's an ellipse).
In that condition, they claim that the radius R' of Moon's new orbit
would be: R'= actual semi-major axis*(1-2e)
and mean moon's speed would become equal to V'= 3680*(1-2e)
where "e" is the actual excentricity of Moon (about 0.0549) and "2e" the variation ratio.
Link to image of maths: http://img40.imageshack.us/img40/9568/1dtp.jpg
Are their claims and calculations accurate?