A Comet Orbits the Sun with a Semimajor Axis of 90

question 3

Multiple Choice

A comet orbits the Sun with a semimajor axis of 90 AU.Using Kepler's third law, the comet's orbital period is approximately

• A) 850 years.
• B) 630 years.
• C) 410 years.
• D) 180 years.
• E) 90 years.

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