As I understand an orbits

Let's fancy, that in our disposal there is some physical superdevice, capable to fix an arrangement of orbital with any precision. For example, with precision - displacement of all on 1 degree on an orbit.
Let's switch on it, we shall aim at a neutron, and what we shall see?

In time equal to time of one turnover of on an orbit, will draw on the monitor a series of the points forming a circle, with centre in the centre of gravity. So, the device will draw to us a circle after a circle.

Let's "accelerate" it, and it will be appreciable, that orbits not in precision "lay down" against each other. The precise line of a circle gradually becomes indistinct and at any stage we shall see, that the orbit became similar to the "belt" surrounding the centre of gravity and a little bit "indistinct" on edges. Since the precession, exterior actions on , etc, should affect.

Let's even more strongly "accelerate" the device, and it becomes visible, that "belt" is more and more dilated aside poles and is already more similar to sphere with centre in the centre of gravity. Thus on it more "dense" "belt" on a place of a former orbit is explicitly visible.
Obviously, similar "spherical" orbit should possess such physical properties, as spin and a moment of magnet.

It is gained, that appearance of an orbit depends on duration and a time scale of its observation.

If to prolong an assumption, that the electron in atom moves on the orbit as the charged point, for example for 1-st Bohr orbit, it for a second will make the order of 6,5*10¹⁵ turnovers. For lower orbits velocity of an electron will be even more.

Definition:

It is possible to consider an orbit of a lepton a classical orbit at rather small amount of the turnovers made by a lepton on an orbit.
At average amount of turnovers, the orbit will look as the belt surrounding the centre of gravity. Under exterior action on an orbital lepton.
At a plenty of turnovers, the orbit will look as the sphere surrounding the centre of gravity. Thus on it will be we shall distinguish a former belt, where the lepton will be is more often, than in other areas of sphere.

What amount of turnovers to consider rather small, medial or great, I think in due course scientific people will be determined. :-)

But certainly hardly the physical device, capable to distinguish a lepton in an orbit as a separate particle, will be ever created. For reasons almost light velocity of the last.