The planet Mercury orbits the Sun in an elliptical path with the Sun at one focus. The eccentricity of the orbit is 0.2056 and the distance between the Sun and Mercury at perihelion (the closest point) is 4.640 X 107 km. Determine the distance at aphelion (the farthest point). Round to the nearest ten thousand kilometers. Express your answer in scientic notation. The distance between the Sun and Mercury at aphelion is approximately I:] km