/34 Assignment 1 1 Unit C Module 1, Lesson 3: Kepler's Three Laws of Planetary Motion Lesson 1 of this assignment is worth 13 marks. The value of each question is noted in the left margin in parentheses. 1. Using your own words, briefly summarize each of Kepler's three laws below. 2. Use the information below to answer parts ab. planet AL. 1'1 = 1.283 X 1011111 r3 = 1.709 X 1011m a) What is the length of the major axis of the elliptical orbit? b) Express the length of the major axis in AU. (1.496 x 10mm equals 1.000 AU.) c) What planet is represented in this question? Explain. (Note: the major axis represents the longest orbital diameter of an elliptical orbit.) 3. Answer parts ac regarding Pluto and its moons. a) Calculate the orbital radius of Pluto in AU if its orbital period is 248 Earth years. b) Pluto's largest moon, Charon (which is nearly half the size of Pluto!), has an orbital period of 153 hours. Can you use the information from part a) to calculate Charon's orbital radius? Explain