Here's why:
* Orbital Eccentricity: Orbital eccentricity measures how much an orbit deviates from a perfect circle. Both Jupiter and Saturn have relatively low eccentricities, meaning their orbits are nearly circular.
* Orbital Period: Jupiter and Saturn have similar orbital periods (the time it takes to complete one orbit around the Sun). This is due to their similar distances from the Sun.
While other planets in the solar system have elliptical orbits, they are generally more eccentric than Jupiter and Saturn.
It's important to remember that even though the orbits of Jupiter and Saturn are nearly circular, they are still technically elliptical. No planet in our solar system has a perfectly circular orbit.
