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)
planet mass (M)


satellite orbit period (T)

Other Units:

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Newton's law of gravity
force between exerted between two objects gravitational force exerted between two objects
mass of object 1 mass of object 1
mass of object 2 mass of object 2
distance between the objects distance between the objects

Kepler's third law
force between exerted between two objects satellite orbit period
mass of object 1 satellite mean orbital radius
mass of object 2 planet mass

gravitational acceleration
gravitational acceleration gravitational acceleration
planet mass planet mass
radius from the planet center radius from the planet center

escape or critical speed
escape or critical speed escape or critical speed
planet mass planet mass
planet radius planet radius

References - Books:

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