Which of the following planets has the longest orbit around the sun?

Neptune has the longest orbit around the sun compared to the other planets listed. This is because Neptune is the eighth planet from the sun and is located the farthest from the sun, at an average distance of about 2.8 billion miles (4.5 billion kilometers). It takes Neptune about 164.8 Earth years to complete one orbit around the sun. In contrast, Jupiter, the largest planet in the solar system, has an average distance from the sun of about 484 million miles (778 million kilometers) and takes only about 11.9 Earth years to complete one orbit around the sun.