Mass | |
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Spacecraft Bus | 598 kg |
Fuel | 388.3 kg |
Science Payload | 75.8 kg |
Total (at Launch) | 1,062.1 kg |
Spacecraft Size | |
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Body | approximately 1.5 m square by 3 m high |
Solar Panels | extended, about 12 m tip-to-tip |
Antenna and Boom | HGA 1.5m dia. on 2m boom |
Basic Attitude Control Design | Three axis control system using reaction wheels and twelve 4.45N thrusters |
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Pointing | Performance requirements |
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Stability | 1 milliradian (for 0.5 second); 3 milliradians (for 12 seconds) |
Control | 10 milliradians |
Knowledge | 3 milliradians |
Command Rate | 12.5 commands per second (maximum) |
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Data Rates | |
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Uplink | 500 bits per second (maximum) |
Downlink | 85.3 kilobits per second (maximum) |
Downlink Radio Frequency Power | 26 watts |
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Solid State Recorders | 3-gigabit capacity (total) |
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Solar Arrays | 4 panels/ total output power 980 watts (maximum) |
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