First of a series of satellites to study water circulation systems in the Earth's atmosphere; July 2012 took up lead position in A-Train.
To test an experimental high-voltage solar array system and observe spacecraft charging effects caused by it; also provide ground communication for junior/senor high school students as amateur radio.
Several technology demonstration experiments and including an experiment to monitor AIS (Automatic Information System) messages transmitted from ships at sea.
44 Ku-band transponders.
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