The Longest Period for a Comet That Can Be Considered

question 41

Multiple Choice

The longest period for a comet that can be considered a Jupiter family comet is 20 years. If the perihelion of such a comet's orbit is very close to the Sun, where is aphelion? (The semimajor axes of the orbits of Jupiter, Saturn, Uranus, and Neptune are about 5, 9.5, 19, and 30 au, respectively.)

• A) between the orbits of Jupiter and Saturn
• B) between the orbits of Saturn and Uranus
• C) between the orbits of Uranus and Neptune
• D) in the Kuiper belt

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