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Zhang Heng 1

Also called CSES 1 (China Seismo-Electromagnetic Satellite)


Designation 43194 / 18015C
Launch date 2 Feb 2018
Country of origin China
Mission Observation of ionosphere
Perigee/Apogee 493/516 km
Inclination 97.3°
Period 94.6 min
Launch vehicle Long March 2D #248

China's first space-based platform for earthquake monitoring through ionosphere observation. The satellite is designed and manufactured by China Academy Space Technology (CAST).

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Technical data


Prime contractor CAST
Platform CAST 2000
Mass at launch 730 kg
Dry mass  
Solar array  
DC power  
Design lifetime 5 years

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