Determine the mass of a star
A new planet is discovered orbiting a distant star. Observations have confirmed that the planet has a circular orbit with a radius of 18 AU and
takes 187 days to orbit the star. Determine the mass of the star. State your answer with appropriate mks units. [NOTE: AU stands for
"astronomical unit". It is the average distance between Earth & the Sun. 1 AU? $1.496 \times 10^{11}$ m.]
2.25E33 kg
X
[NOTE: Your answer will be quite large and your calculator will display the answer as a power of 10. If, as an example, your answer was 8.54 X
$10^{56}$, you would type "8.54e56" into the answer box (remember to state your units with your answer).]