An Asteroid Has a Perihelion (The Orbit's Closest Approach to the Sun)

Multiple Choice

An asteroid has a perihelion (the orbit's closest approach to the Sun) of 2.5 AU and a period of revolution of 8.0 y. What is its greatest distance from the Sun (its aphelion) ? (Hint: For an elliptical orbit, the effective radius of the orbit is half the sum of the nearest distance to the Sun and the greatest distance from the Sun.)

A) 8.0 AU
B) 6.5 AU
C) 5.5 AU
D) 2.5 AU