Transform.RotateAround (Idea Orbiting around planets)

function RotateAround (point : Vector3, axis : Vector3, angle : float) : void

Description

Rotates the transform about axis passing through point in world coordinates by angle degrees.

This modifies both the position and the rotation of the transform.

function Update() {
// Spin the object around the world origin at 20 degrees/second.
transform.RotateAround (Vector3.zero, Vector3.up, 20 * Time.deltaTime);
}