Request: comet projectory calculating tool

[Keba]

Hi
(I hope I'm posting in the right place)
In physics class we are currently working with projectories of comets etc. that reach the orbit of planets, and get pulled in by its gravity. My teacher is currently doing the work in an excel document, but has requested a better solution for calculating the projectories.
Does anyone know of a program (freeware is prefferable) that can simulate such projectories with a graphic interface? Or has any ideas of how it could be accomplished without having to do it in excel? Any comments on the matter appreciated.

 

[Keba]

Does anyone of of such an application?

 

[tony873004]

What is a projectory? Do you simply want to plot the trajectory of a comet? You could use Gravity Simulator: www.gravitysimulator.com

 

[Keba]

I believe that was what I have been looking for.

Thank you tony873004.

 

[tony873004]

If you need help setting up your simulations let me know. For comets, you might prefer the beta version:

http://www.orbitsimulator.com/cgi-bin/yabb/YaBB.pl?num=1176774875