How to get the parameters of a bivariate normal density ellipse?

[#1]

I would like to be able to extract the parameters of an ellipse drawn in a bivariate plot. By parameters I mean, the long and short axes and direction of the long axis, not just means and std devs. Is there a way?

[#2]

Ellipse​

may be what you need.

[#3]

Craige, thanks for your reply. This helps a lot!