Article to be Pointed

Entire payload or some payload subset such as antennas or a thermal radiator

Pointing Direction

Defined relative to what reference

Pointing Range

All of the possible pointing directions

Pointing Accuracy

Absolute angular control requirement

Pointing Knowledge

Knowledge of pointing direction either in real time or after the fact

Pointing Stability

Maximum rate of change of angular orientation

Slew Rate

Reorientation from one pointing direction to another in a specified time

Exclusion Zones

For example, "not within 10 deg of the Sun"

Other Requirements:

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