[NolF]

Most of them are not that elliptical. When put to scale, they difference is almost negligible. For example Mercury has a 23.8Gm difference (51.7%) which sounds like a lot but that's 4 times less than Neptune's 80Gm difference (1.79%) and only 0.5% of Neptune's distance.

* Mercury max 69.8 Gm :: 46.0 Gm :: 51.7%

* Venus max 108.9 Gm :: min 107.5 Gm :: 1.30%

* Earth max 152.1 Gm :: min 147.1 Gm :: 3.40%

* Mars max 249.2 Gm :: min 206.7 Gm :: 20.6%

* Jupiter max 816.0 Gm :: min 740.6 Gm :: 10.2%

* Saturn max 1,509 Gm :: min 1,350 Gm :: 11.8%

* Uranus max 3,008 Gm :: min 2,742 Gm :: 9.70%

* Neptune max 4,540 Gm :: min 4,460 Gm :: 1.79%