What in the world is a "center of masses"? (or center of mass?) Do you mean the CP perhaps?
Second, if you have to use words like "small bodies" and "superlarge objects" to differentiate behaviour, your physics theory/understanding is wrong. Scale has no bearing on classical mechanics.
All that the OP was asking about was mass distribution. You can have 10 kg sitting on the center fuselage of the aircraft, or 5 kg sitting at the tip of each wing. Your CG will not have moved one bit. What will change is the moment of inertia (ie. in the plane with the weights on the wings will roll slighly slower because of the way the mass is distributed). There is no need to bring the Moon into the discussion.