## For a moon orbiting its planet, rp is the shortest distance between the moon and its planet andra is the longest distance between the moon a

Question

For a moon orbiting its planet, rp is the shortest distance between the moon and its planet andra is the longest distance between the moon and its planet. What is a moon’s orbital eccentricity if rp is equal to 0.27ra?

A. 0.65

B. 0.27

C. 0.48

D. 0.57

D. IS THE CORRECT ANSWER!

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2021-07-22T06:42:56+00:00
2021-07-22T06:42:56+00:00 1 Answers
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## Answers ( )

Answer: D. 0.57Explanation:The formula to calculate the eccentricity of an ellipse is (assuming the moon’s orbit in the shape of an ellipse):

Where:

is the apoapsis (the longest distance between the moon and its planet)

is the periapsis (the shortest distance between the moon and its planet)

Then:

This is the moon’s orbital eccentricity