* Planets' orbits are elliptical: Planets don't travel in perfect circles around the sun. Their orbits are slightly oval-shaped, meaning their distance from the sun varies throughout their orbit.
* Distance changes constantly: Even at a given point in their orbits, the distance between planets and the sun is constantly changing.
To figure out which planet is closest to that distance, you'd need to know:
* The specific point in time you're asking about: The distance between the planets and the sun changes constantly, so the answer would depend on the date and time.
* Whether you want the average distance, or the distance at a specific moment: Planets have an average distance from the sun (their semi-major axis), but their actual distance varies throughout the year.
However, we can make an educated guess. 3670 million miles is roughly the average distance of Jupiter from the sun. Keep in mind, though, that this is just an approximation.
