how to generate a 3d trajectory of an orbiting particle having radius 8000 parsecs??

I want to construct a 3d trajectory for the motion of sun around our galactic center. The orbital path of sun is a circle and the center is a black hole.Distance between sun and galactic center is 8000 parsecs.Now i want to construct the trajectory showing movement of sun around galactic center.This will be as simple as considering a particle moving around some source in a circle with radius 8000 parsecs.Can you please tell me how should i do this!!

Answer 1

[Image Analyst]

Maybe the FAQ http://matlab.wikia.com/wiki/FAQ#How_do_I_create_an_ellipse.3F and the comet() function?