Angular Speed and Orbital Period
Hence the orbital period can be computed as:
Compare two proportional quantities, the free-fall time (time to fall to a point mass from rest)
- (17.7 % of the orbital period in a circular orbit)
and the time to fall to a point mass in a radial parabolic orbit
- (7.5 % of the orbital period in a circular orbit)
The fact that the formulas only differ by a constant factor is a priori clear from dimensional analysis.
Read more about this topic: Circular Orbit
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