Solving Elliptical Orbit Homework: Comet's Semi-Major Axis & Sun Distance

[myoplex11]

Homework Statement

The period of a comet orbit is 100 years. As its closests approach is 0.37 AU from the sun. What is the semi-major axis of the comet's orbit? How far does it get from the sun?

Homework Equations

(T1/T2)^2 = (s1/s2)^3

The Attempt at a Solution

I don't even know where to begin with this problem any help would be really appreciated.

 

[alphysicist]

Hi myoplex,

Homework Statement

The period of a comet orbit is 100 years. As its closests approach is 0.37 AU from the sun. What is the semi-major axis of the comet's orbit? How far does it get from the sun?

Homework Equations

(T1/T2)^2 = (s1/s2)^3

The Attempt at a Solution

I don't even know where to begin with this problem any help would be really appreciated.

What does Kepler's laws have to say about periods and semi-major axis?