since you gave me a place to start with it's turning out to be not quite so bad to derive the formula I need. TYVM for the start on it and giving me the direction to go in...I'll post the Spacial equations for an ellipse once I'm done the derivations.

Ok so may be I'm not as close as I though...

But I have found the Conversion formulae for cart. to polar (3d).

X=P sin ϕ cos è

Y=P sin ϕ sin è

Z=P cos ϕ

From your equation

e=(1-b^2)^0.5

Which set a Upper limit of 1 on b for real answers

Another Known is, When the equation of an ellipse is in the form Ax2+Bxy+Cy2+Dx+Ey+F=0

(1-tan^2(è))/(2 tan^2(è)) = (A-C)/B

now as for the rest I'm scratching again.