how many days does neptune take to circle the sun
Why does it take Neptune to orbit the longest. Since Neptune is further from the sun than Earth, it takes this planet a much longer time to orbit completely around the sun. Longest to orbit around the sun. Neptune takes 164 earth years to orbit the sun .60,189 earth days and 1979 earth months to orbit the sun. It takes Neptune around 17,000,000,000 miles to travel one complete orbit. How it Orbits. But now we still have the question of why anything orbits something else.