🛰️ SATELLITE · HISTORICAL RECORD
Tongxin Jishu Shiyan 21
Historical recordTongxin Jishu Shiyan 21 (NORAD 66586, COSPAR 2025-269A) is a historical CN catalogue entry no longer tracked in the live catalogue, launched on 21 Nov 2025 on the TJS 21 mission. It is catalogued as TJS 21. It was operated by PLA GAD / SAST as part of the SW10 programme. The spacecraft was built by SAST on the TJS11 bus, with a mass of 4,000 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
2025
launched
1
year on orbit
4,000
kg mass
Lifecycle
Launched21 Nov 2025 · on the TJS 21 mission
Specifications
NORAD ID66586
COSPAR2025-269A
TypeSatellite
OperatorPLA GAD / SAST
Country / StateCN
ManufacturerSAST
BusTJS11
Mass4,000 kg (2,500 kg dry)
ProgrammeSW10
CategoryTECH
OrbitHEO (HEO/M)
Altitude2,081 × 38,270 km
Inclination63.3°
Frequently asked questions
What happened to Tongxin Jishu Shiyan 21?
Tongxin Jishu Shiyan 21 is a historical catalogue entry from a 2025 launch. It is not currently tracked in the live catalogue — typically meaning it has decayed, been retired, or its tracking elements have lapsed.
Who operated and built Tongxin Jishu Shiyan 21?
Tongxin Jishu Shiyan 21 was operated by PLA GAD / SAST and built by SAST (CN).
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-16.