The present disclosure provides a system for autonomously docking a spacecraft, the system comprising: one or more electromagnets; one or more sensors; and a controller. The controller configured to: identify a target; cause movement of the spacecraft closer to the target; determine a change in an orientation of the one or more electromagnets and the mating adapter on the target; and adjust a current in the one or more electromagnets to produce a torque, wherein the torque causes the spacecraft to align with the target.

This invention is an Reactionless electromagnetic engine which produces thrust without propellant. It does so with one or more solenoid coils, one coil with a passive magnetic field applied to it and another coil which can be the same as the first coil with an active magnetic field. It generalizes reactionless thrusters where any free moving source of kinetic energy can be coupled to a magnet which is driven into another magnet of the opposite polarity fixed onto the system to transfer the thrust of the free moving component into the system as a whole, and where the component then must be returned to its original position to generate more kinetic energy to be transferred into the system in an additional cycle.