Spin-axis pointing of a magnetically actuated spacecraft

► Magnetic control provides higher reliability and lower energy consumption at the cost of under-actuation. ► A proof of asymptotic stability for a prescribed pure spin condition is derived. ► The control law performs the feedback of two different angular momentum error signals. ► The spin axis is aligned with a desired direction in spite of inherent under-actuation. ► Monte Carlo simulation is used for determining optimal values of control law gains.