Astronomy...not sure about this answer...

[Ftredoc]

Hello all!
Okay, in my class, we are currently learning about Comet Holmes. Last week we learned that the comet has a semimajo axis of 3.6AU and an eccentricity of 0.43. The last time the comet was on its orbit was 2007. I have been asked to calculate the orbital period of Comet Holmes, find out the next year that the comet will be at perihelion and when will it be at aphelion, and if the comet will be coldest at perihelion or aphelion. Here are my answers...am I right?

Orbital period: P^2=A^3; So I plugged in 3.6AU to equal A, which gave me 6.831 as the orbital period

For the year pf perihelion, I just added 7 years to the 2007 date which gave me 2014...I got the 7 years by rounding up 6.831 and for the aphelion my answer was 17.854. I plugged in 6.831 fo A again. So my date would be sometime in 2025.

I believe that that the comet would be at Perhelion...place on orbit closest to the sun. Thanks!