Gravity Equations Formulas Calculator

Science Physics Kepler's Third Law

Solving for satellite orbit period.
orbit period
G is the universal gravitational constant
G = 6.6726 x 10-11N-m2/kg2


satellite mean orbital radius (r)
planet mass (M)


satellite mean orbital radius (r)
= 0
= 0
planet mass (M)
= 0
= 0


satellite orbit period (T)

Other Units:

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Newton's law of gravity
force between exerted between two objectsgravitational force exerted between two objects
mass of object 1mass of object 1
mass of object 2mass of object 2
distance between the objectsdistance between the objects
Kepler's third law
force between exerted between two objectssatellite orbit period
mass of object 1satellite mean orbital radius
mass of object 2planet mass
gravitational acceleration
gravitational accelerationgravitational acceleration
planet massplanet mass
radius from the planet centerradius from the planet center
escape or critical speed
escape or critical speedescape or critical speed
planet massplanet mass
planet radiusplanet radius

References - Books:
Tipler, Paul A.. 1995. Physics For Scientists and Engineers. Worth Publishers. 3rd ed.