Answer:
Earth is located at one _focus_ of the Moon's orbit.
According to Kepler's second law, Jupiter will be traveling most slowly around the sun when at _aphelion_
Earth orbits in the shape of an _ellipse_ around the Sun.
The mathematical form of Kepler's third law measures the period in years and the _semimajor axis_ in astronomical units (AU).
According to Kepler's second law, Pluto will be traveling fastest around the Sun when at _perihelion_.
The extent to which Mars' orbit differs from a perfect circle is called its _eccentricity_