Sidereal period of phantom planet

Level 1

The distance between the earth and the sun is 1 1 AU, and the sidereal period of the earth is 1 1 year. If a certain planet is located at a distance of 9 9 AU from the sun, what is its sidereal period?

81 years 273 years 27 years 9 years

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1 solution

Mayank Holmes
May 24, 2014

Time period is directly proportional to ( (dist) ^ (3/2))

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