I just realized that the method resetOrbit does not check if the input has the same frame than the builder itself. This is rather risky for a public method. I think there should either be a check or a conversion there. Thoughts?
sure I can create an issue but it would be good to agree on the solution first. Throw an exception if the frame is different or make the conversion on the fly? On another note, the naming for this method is a bit confusing because the mu is ignored. Anyway it seems to be only used natively in the Kalman filters.