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SJ 4
SJ 4 [CAST]
SJ 4 (Shi Jian 4) was a satellite to monitor the space radiation environment and its effects in an elliptical orbit.
SJ-4 was built by CAST. The spin stabilized spacecraft had a mass of 397 kg with a diameter of 1.6 m and a height of 2.1 m.
The satellite was equipped with six instruments:
- EED (High Energy Electron Detector)
- EPS (High Energetic Proton and Heavy Ion Detector)
- ESA (Electrostatic Analyzer)
- SEEM (Dynamic Single Event Effect Monitor)
- SEUM (SRAM Single Event Upset Monitor)
- SPM (Surface Potential Monitor)
The satellite was launched from Xichang on the maiden flight of the CZ-3A rocket and was put into a geosynchronous transfer orbit of 210 km × 36125 km with an inclination of 28.6º. It operated for about six months.
| Nation: | China |
|---|---|
| Type / Application: | Technology |
| Operator: | |
| Contractors: | CAST |
| Equipment: | |
| Configuration: | |
| Propulsion: | |
| Power: | Solar cells, batteries |
| Lifetime: | 6 months |
| Mass: | 397 kg |
| Orbit: | 210 km × 36125 km, 28.6º |
| Satellite | COSPAR | Date | LS | Launch Vehicle | Remarks | |
|---|---|---|---|---|---|---|
| SJ 4 | 1994-010A | 08.02.1994 | Xi LC-2 | CZ-3A | with KF 1 |
Further SJ missions:
