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Zhangheng 1 (CSES 1)

Zhangheng 1 [CAST]

Zhangheng 1 or CSES (China Seismo-Electromagnetic Satellite) is a Chinese research satellite for the observation of Ionospheric precursors of earthquakes. The mission is conducted by the China National Space Administration (CNSA) with the China Earthquake Administration and China National Space Administration in cooperation with the Italian Space Agency (ASI).

Zhangheng 1 is to measure the electromagnetic situation of earthquakes above 6 magnitude in China and quakes above 7 magnitude all over the world. It is based on the CAST2000 platform developed by the China Academy of Space Technology (CAST). The launch mass is 730 kg.

It carries a range of instruments to detect and measure high-energy particles, plasma, and electric and magnetic fields.

  • High Energy Particle Detector (HEPD) provided by Italy
  • search-coil magnetometer
  • fluxgate magnetometer
  • electrical field detector (EFD)
  • plasma analyzer
  • Langmuir probe
  • GNSS occultation receiver
  • magnetic field calibration device (developed in Austria)

Data collected by the mission will also allow studying solar-terrestrial interactions and phenomena including Coronal Mass Ejections and solar flares.

It was launched in February 2018 on a CZ-2D (2) rocket from China's Jiuquan space center.

Nation: China
Type / Application: Science, Ionospheic, earth scienc
Operator: CNSA, ASI, China Earthquake Administration (CEA)
Contractors: CAST
Configuration: CAST2000 bus
Power: Deployable solar array, batteries
Lifetime: 5 years
Mass: 730 kg
Orbit: 489 km × 509 km, 97.34°
Satellite COSPAR Date LS Launch Vehicle Remarks
Zhangheng 1 (CSES 1) 2018-015C 02.02.2018 Jq LC-43/94 CZ-2D (2) with ŅuSat 4, ŅuSat 5, GOMX 4A, GOMX 4B, FengMaNiu 1, Shaonian Xing

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