Table 8 Sensors and actuators according to each AOCS mode (1)

	Detumbling	Initia. sun-pointing	Sun-pointing	Ground contact
				Daylight	Eclipse
MEMS Gyro	○	○	○	○	○
MEMS magnetometer	○	○	○	○	○
Analog sun sensor	△	○	○	○	△
Star tracker	×	×	×	○	○
GPS	×	×	○	○	○
MTQ	○	○	×	×	×
Reaction wheel	×	×	○	○	○
Thruster	×	×	×	×	×
Attitude determination	B estimator	B estimator	EKF	EKF	EKF
Attitude control	P: Gyro feedback B: B-dot	2-axis	3-axis	3-axis	3-axis

○, turn on and use it; △, turn on but not use it; ×, turn off.