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Keplers Third Law - Orbital Motion

Kepler Law describes the motion of planets and sun, and kepler third law states that 'square of orbital period of a planet is proportional to cube of semi major axis of its orbit.

Orbital Motion

To calculate Orbital Motion:

  • What you want to calculate

  • Satellite Mean Orbital Radius(r)

    M

  • Planet Mass(M)

    kg

  • Satellite Orbit Period(T)

    S

  •  

Formula:
Satellite Orbit Period:


Satellite Mean Orbital Radius:


Planet Mass:


where,
G = Universal Gravitational Constant = 6.6726 x 10-11N-m2/kg2
r = Satellite Mean Orbital Radius
M =Planet Mass

Kepler Law describes the motion of planets and sun, and kepler third law states that "square of orbital period of a planet is proportional to cube of semi major axis of its orbit.