Lots of satellites have thrusters to stabilize and adjust their orbits. Especially those at lower orbits since they do have to counter the effects of atmospheri

Lots of satellites have thrusters to stabilize and adjust their orbits. Especially those at lower orbits since they do have to counter the effects of atmospheric drag. All that's really needed is a convention for those satellites than can, to use the last remaining propellant to perform a de-orbit maneuver.