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Spacecraft Data Sheet

Mass
Spacecraft Bus598 kg
Fuel388.3 kg
Science Payload75.8 kg
Total (at Launch)1,062.1 kg

Spacecraft Size
Bodyapproximately 1.5 m square by 3 m high
Solar Panelsextended, about 12 m tip-to-tip
Antenna and BoomHGA 1.5m dia. on 2m boom

Basic Attitude Control DesignThree axis control system using reaction wheels and twelve 4.45N thrusters

PointingPerformance requirements
Stability1 milliradian (for 0.5 second); 3 milliradians (for 12 seconds)
Control10 milliradians
Knowledge3 milliradians

Command Rate12.5 commands per second (maximum)

Data Rate
Uplink500 bits per second (maximum)
Downlink85.3 kilobits per second (maximum)

Downlink Radio Frequency Power26 watts

Solid State Recorders3-gigabit capacity (total)

Solar Array4 panels/ total output power 980 watts (maximum)




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