9 Satellites; Satellite components, namely, satellite buses, satellite platforms, Sun Sensor, Fine Sun Sensor, Attitude Estimator, electrical Spherical Actuator, electrical Multiaxis Actuator with Multiaxis Motor and Spherical Motor; Satellite sub-systems, namely, Attitude control system (ACS), comprised of motor, magnetorquers, micro-controller, power regulation units, and motor driving circuitries, Attitude Determination System comprised of fine sun sensors, coarse sun sensors, gyroscopes, magnetometers, micro-controller, GNSS receiver, GNSS antenna, and power regulation units, Attitude determination and control system (ADCS) comprised of motor, magnetorquers, micro-controller, power regulation units, motor driving circuitries, fine sun sensors, coarse sun sensors, gyroscopes, magnetometers, micro-controller, GNSS receiver, GNSS antenna, and power regulation units, Integrated Attitude determination and control system comprised of motor, magnetorquers, micro-controller, power regulation units, motor driving circuitries, fine sun sensors, coarse sun sensors, gyroscopes, magnetometers, micro-controller, GNSS receiver, GNSS antenna, and power regulation units, and Integrated Attitude control system comprised of motor, magnetorquers, micro-controller, power regulation units, motor driving circuitries, fine sun sensors, coarse sun sensors, gyroscopes, magnetometers, micro-controller, GNSS receiver, GNSS antenna, and power regulation units, all the aforementioned as satellite systems; Device for attitude control and position regulation for satellite, spacecrafts, and vehicle motion control, namely, reaction wheel; Device for attitude control and position regulation for satellite, spacecrafts, and vehicle motion control, namely, reaction sphere; Mass property measuring instruments; Testing apparatus for attitude control for use in satellite, spacecrafts, and vehicle motion control; Testing platform comprised of specially-designed hardware and recorded firmware and software for attitude control for use in the optimization, calibration, and functional test of Satellite, spacecrafts, and vehicle motion control; Device for attitude control and position regulation, namely, control moment gyroscopes (CMG); Device for attitude control and position regulation, namely, single-gimbal control moment gyroscopes; Device for attitude control and position regulation, namely, variable-speed single-gimbal control moment gyroscopes