An asteroid in an elliptical orbit about the sun travels at

Question

An asteroid in an elliptical orbit about the sun travelsat 1.0*10⁶ m/s at perihelion(the point of closest approach) at a distance of 3.9*10⁸ km from the sun. Howfast is it traveling at aphelion (the most distant point), whichis 8.8*10⁸ km from the sun? Answer in m/s.