Kepler-62e is a planet similar in size to the Earth with an orbital period of 122 days. The star it orbits has a mass of 1.4 x 1030 kg. Convert the period to hours and use Newton's version of Kepler's 3rd law to calculate the semimajor axis of this planet's orbit. Your answer will not match any of these choices, instead choose the answer that is closest to your calculated value.
a. 5 x 10^3 km
b. 5 x 10^6 km
c. 5 x 10^7 km
d. 5 x 10^8 km