A planet with mass 5.98 × 1024 kg orbits a star with mass 1.99 × 1030 kg. The distance between the planet and the star at the perihelion is 1.39 × 1011 m, and the distance at the aphelion is 1.804 × 1011 m. The planet's orbital speed at the perihelion is 32849.8 m/s.
Determine its orbital speed at the aphelion.
Determine its kinetic energy at the perihelion.
Determine its potential energy at the perihelion.
Determine the kinetic and potential energy at the aphelion.