If planet Y is twice the mean distance from the sun as planet X, the orbital period is increased by the factor 2^3/2.
State Kepler's law
The Kepler's third law underscore the relationship between the orbital period T and the mean distance from the sun, A, in astronomical units, AU.
Mathematically, we can write; T^2 =A^3
Where;
T = orbital period
A = mean distance from the sun
If planet Y is twice the mean distance from the sun as planet X, the orbital period is increased by the factor 2^3/2.
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