Tongxin Jishu Shiyan 21

In orbit

Tongxin Jishu Shiyan 21 (NORAD 66586, COSPAR 2025-269A) is a CN satellite in orbit, launched on 21 Nov 2025 on the TJS 21 mission. It is catalogued as TJS 21. It is 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. No current orbital elements are published for it, so it is not shown on the live map or in pass predictions. Catalogue record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.

2025

launched

year on orbit

4,000

kg mass

Lifecycle

Launched21 Nov 2025 · on the TJS 21 mission

StatusOn orbit (not live-tracked)

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 is Tongxin Jishu Shiyan 21?

Tongxin Jishu Shiyan 21 is a satellite launched in 2025 that is still in orbit. No current orbital elements are published for it, so it is not shown on the live map or in pass predictions.

Who operates and built Tongxin Jishu Shiyan 21?

Tongxin Jishu Shiyan 21 is operated by PLA GAD / SAST and built by SAST (CN).

Catalogue record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-11-01.

Browse the live satellite directory → The Orbital Register → Launch record: TJS 21 → What is space debris? →