Planet Motion: Calculate Star Mass

Thread starter myoplex11
Start date Oct 25, 2008
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myoplex11

Thread starter
Oct 25, 2008

Homework Statement

a 9.9*10^23 kg planet orbits a star in a circular orbit. The planet is 5.6 AU away from the star and has an orbital velocity of 32 km/s. What is the mass of the star. (1AU = 1.496*10^11m)

Homework Equations

G Mp Ms / r^2 = Mp V^2/r

The Attempt at a Solution

Ms = v^2 r /G
is my solution correct

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Oct 25, 2008

Looks good to me.

Planet Motion: Calculate Star Mass

Homework Statement

Homework Equations

The Attempt at a Solution

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Planet Motion: Calculate Star Mass

Homework Statement

Homework Equations

The Attempt at a Solution

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