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A planet has an average distance to the sun of 0.66 AU. In two or more complete sentences, explain how to calculate the orbital period of the planet and calculate it.

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We can use the formula for orbital time period:
T² = (4π²/GM)a³; where T is in Earth years, a is distance from sun in AU, M is the solar mass (1 for the sun), G is the gravitational constant.
In the given units, 4π²/G = 1
T² = 0.66³
T = 0.536 Earth years = 195.71 Earth days
User Aries McRae
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