Question: Which two planets of our solar system have the most eccentric orbits?
Disambiguated questions and answers: question: Which two minor planets of our solar system have the most eccentric orbits?
Which two major planets of our solar system have the most eccentric orbits?
answer: Sedna
Sedna and Eris
90377 Sedna
Mars
Mercury and Mars
Mercury
Natural Questions answer: Mercury
Pluto (from the Wikipedia article "Orbital eccentricity")