How Closely Do You Expect Comet Halley to Obey Kepler's

question 117

Multiple Choice

How closely do you expect Comet Halley to obey Kepler's laws (particularly P² = a³ with P in years and a in AU) ?

• A) Never,because it moves independently and is not related to the motions of the planets
• B) Very closely only when it is close to the Sun (within Earth's orbital distance)
• C) Closely only at very large distances
• D) Fairly closely,because it is gravitationally bound to the Sun

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