Contemporary Geodesy: Proceedings of a Conference Held at ...
Full view
Ellipsoid Parameters from Satellite Data John A. O'Keefe, Nancy G. Roman, Benjamin S. Yaplee, and Ann Eckels National ... We know, from Kepler's law that a3/T2 = const when a is the orbital semi major axis of the Moon and T is the period. We substitute n, which is 2ir/T; and remember that Newton told us that the constant was const = 4**G (M + m) (1) when M is the Earth's mass and m is the Moon's ...