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The trans-neptunian object sedna has an extremely large semimajor axis. in the year 2004, it was estimated to be 480 au. what is the period of sedna's orbit, measured in earth years?
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The trans-neptunian object sedna has an extremely large semimajor axis. in the year 2004, it was estimated to be 480 au. what is the period of sedna's orbit, measured in earth years?

User ClearLogic
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2 Answers

3 votes

Answer:

10,516 years

Step-by-step explanation:

User Lesleh
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5 votes
The orbital period is proportional to the 3/2 power of the semi-major axis. Earth, with a semi-major axis of 1 au has a period of 1 year, so Sedna is expected to have an orbital period of
480^(3/2)×(1 year) ≈ 10,516 years
User Fengb
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