[Jorge Hernández]

I see now I did not even say thanks. Thanks! Works like a charm.

As slight change for added intuitiveness was pickwhip the satellite\’s xrotation to the nulls yposition
and the yrotation to the xposition, and setting it to negative with a minus in front.

I was not trying to deriving the x,y,z from the position of a null, but from the position values of the satellite itself, so that once an initial value was set, scrolling over its position values changed its position in the orbit. Still I can perfectly put up with an additional controller object.

Thanks again!

[Jorge Hernández]

I have no knowledge whatsover about trigonometry, algebra, or whatever you call the transformations and equations being worked out here, so I will simply ask and hope to be delivered ^_^

Can I complicate things a bit further?

What modifications should be necessary so that, from the viewer’s default POV:

1. At 0,0,0, the satellite object is right in front of the center object.

2. with x<0 the satellite orbits towards the left, and with x>0 it orbits towards the right. Similarly, with y>0 it orbits upwards, while with y<0 it orbits downwards. I.e., a value of x= ±180 brings the satellite right behind the object, and a value of y=±90 brings the satellite to either of the two poles.

3. x, y values behave like rotation degrees, and thus can loop. I.e., x or y =±360 makes a full 360° orbit, and with values >360 or <-360 the satellite keeps orbiting in the same direction. 4. z value adds or subtracts from the radius specified in the center object's slider.