Science
SHIYAN-4 (SY-4)
Chinese Technology Demonstrator · CAST
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Shiyan-4 (SY-4), continuing China's Shiyan technology demonstration program, launched in 2011 to test satellite bus and payload technologies feeding into later operational Chinese satellite designs.
Its orbit
- Orbit
- Low Earth Orbitcan appear as a fast-moving star at dawn or dusk
- Altitude
- 482–502 mi (776–808 km)
- Inclination
- 98.7°
- One orbit
- 100.6 minutes14.3 orbits a day
- NORAD ID
- 37931
- Int’l designator
- 2011-068B
- Launched
- 2011
Orbital elements from CelesTrak, as of 22 Sep 2026.
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