[Junior]

They also tend to have more elongated orbits than those of Jupiter and the Earth, both of which orbit the Sun on almost circular paths.

I thought our planets' orbits were "wildly elliptical."

[alnitak]

Actually only slightly so, except for Pluto. Mars is quite high too. In the table linked here, "Orbital Eccentricity" is the line to look at. The "Ellipticity - Flattening" refers to the non-sphericalness of the planet itself (Saturn stands out here due to high rotation and low density)

http://home.cwru.edu/~sjr16/advanced/planets_main.html