Question

The orbital period of Planet A is 16 years and its average distance to Star B is 5.25 a.u. Another planet called Planet C has an average distance of 10.3 a.u. from Star B, using Kepler’s Third Law of Planetary Motion, compute the orbital period of Planet C to Star B in days.

Answer 1

$T_2=T_1(\frac{a_2}{a_1})^\frac 32=44$ years.