Anewly discovered planet orbits a distant star with the same mass as the sun at an average distance of 128 million kilometers. its orbital eccentricity is 0.3. find the planet's orbital period in months

The answer for this problem would be:

Orbital period if distance = 128,000,00 km and mass = Sun? 

This is approximately be .85 astronomical units if converted km to au.

We will be using Kepler's third law which is:

T^2 = r^3 

T^2 = .85^3 

T^2 = .61

get the square root of .61
so the answer will be:

T = .78 Years which is in months is 9.36 months.

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