When I see depictions of the electron orbital of a hydrogen atom, I see a static proton in the center surrounded by an electron cloud. What would it look like if we shifted the reference frame to the electron and observed the proton? That is, what would it look like if we assumed the electron was statically positioned in the center and the proton formed a cloud around it? It seems arbitrary to me that we should choose the proton as the center of reference save only that it has more mass.
If anyone knows where I could look to see depictions of such a frame of reference shift, or is able to model one, I would be grateful.