Whole satellite mass：170~250kg；
Payload ratio：30%~60%;
Output power:≤500W;
Life span:3~5 years;
Bias momentum pointing accuracy≤0.5°，stability≤0.005°/s；
Zero momentum pointing accuracy≤0.1°，stability≤0.001°/s；
Measurement and control: uplink 2kbps; downlink 16kbps
Data transmission: ≤700Mbps.