Science
SJ-7
Chinese Technology Demonstrator · CAST / Chinese Academy of Sciences
Right now
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Shijian-7 (SJ-7), part of China's long-running Shijian technology demonstration series, launched in 2005 to test space environment monitoring and new satellite bus technologies — one of dozens of Shijian missions whose true individual purposes China has rarely detailed publicly.
Its orbit
- Orbit
- Low Earth Orbitcan appear as a fast-moving star at dawn or dusk
- Altitude
- 305–319 mi (490–513 km)
- Inclination
- 97.7°
- One orbit
- 94.5 minutes15.2 orbits a day
- NORAD ID
- 28737
- Int’l designator
- 2005-024A
- Launched
- 2005
Orbital elements from CelesTrak, as of 22 Sep 2026.