If an object is orbiting the Sun with an orbital period of 15 years, what is its average distance from the Sun? a = (225)1/3 = 6.1 AU.
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There is a simplified version of this law: P2 = a3 where:
The object must be orbiting the Sun.
P = period of the orbit in years.
a = average distance of the object from the Sun in AU.
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