Аннотация:The paper considers the issues of stabilization and orientation of a spacecraft with an air-breathing electric propulsion (ABEP). The main attention is paid to angular motion. The analysis of the main existing methods of active and passive motion stabilization of spacecraft operating in ultra-low Earth orbits (ULEO) with an altitude of 120–250 km is carried out. The main feature of motion of spacecraft with the ABEP in orbit is the dependence of the efficiency of the ABEP itself on the orientation of the air intake with respect to the flow. Constant oscillations of the spacecraft longitudinal axis relative to the flow can lead to a decrease in ABEP efficiency and, as a result, to the spacecraft deorbiting. Mathematical model of motion of spacecraft with the ABEP in orbit has been developed using the results of calculating its free-molecular flow by the Direct simulation Monte Carlo (DSMC) method. The developed model has been verified based on the solution of a model problem solved in other scientific papers. Using this model, passive aerodynamic stabilization and active stabilization of angular motion were investigated by various methods. The requirements for the operation of stabilization systems were determined and their comparative analysis was carried out according to the criterion of minimum energy consumption of the system. It is concluded that deflectable aerodynamic surfaces can be the main means of stabilization and orientation of spacecraft with the ABEP operating in ULEO and can be combined with systems of other types.