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The square of an orbital period (P) is proportional to the cube of the ellipse's semimajor axis (A) | P^2 ∝ A^3where: | P is the period of the orbit (in years) | A is the semimajor axis (in AU) | '∝' is the proportionality symbol | (If period is in years and semimajor axis is in AU, then proportionality('∝') becomes equality ('='))

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1. The square of an orbital period (P) is proportional to the cube of the ellipse's semimajor axis (A) | P^2 ∝ A^3
where: | P is the period of the orbit (in years) | A is the semimajor axis (in AU) | '∝' is the proportionality symbol | (If period is in years and semimajor axis is in AU, then proportionality('∝') becomes equality ('='))





 
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