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China Aerospace Science and Technology CorporationLong March 3B/ELaunch Complex 2 (LC-2), Xichang Satellite Launch Center, People's Republic of China
TJSW-21
Launched
November 21, 2025 · 10:55 UTC
Image: China Aerospace Science and Technology Corporation
Summary
TJSW-21 launched on a China Aerospace Science and Technology Corporation Long March 3B/E from Launch Complex 2 (LC-2), Xichang Satellite Launch Center, People's Republic of China on November 21, 2025 at 10:55 UTC. The launch window ran from 10:47 to 11:23 UTC. It was China Aerospace Science and Technology Corporation's 556th launch, 55th this year and humanity's 7,125th orbital launch attempt. It was the 73rd Long March 3B/E flight and the 11th this year. The payload was bound for Elliptical Orbit (Elliptical). Tongxin Jishu Shiyan 21, one of 2 catalogued objects, reached a 213 × 40,092 km orbit inclined 51.0°. 2 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Booster
- No booster details on record.
- Mission
- Government/Top Secret · Elliptical Orbit (Elliptical)
- Milestone
- 73rd Long March 3B/E flight · 11th this yearChina Aerospace Science and Technology Corporation's 556th launch55th this yearhumanity's 7,125th orbital launch attempt276th orbital launch attempt this year
Flight preview
Orbit: as tracked
Tongxin Jishu Shiyan 21 · NORAD 66586 · 2025-269 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2025-269A
- Epoch
- 2025-11-21 12:42:42 UTC
- Mean motion
- 2.00979594 rev/day
- Eccentricity
- 0.751753
- Inclination
- 51.0388°
- Ascending node
- 174.8241°
- Arg. of perigee
- 224.9597°
- Mean anomaly
- 41.7816°
- Element set
- 999
- Rev at epoch
- 1
- B*
- 0.00052189
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: Elliptical. Ascent drawn from padside's representative profile.
Catalogued objects
2 catalogued: 1 payload, 1 rocket stage; 1 still in orbit
- Tongxin Jishu Shiyan 21 · NORAD 66586 · in orbit
CZ-3B Y11x Stage 3 · re-entered February 10, 2026
Data from J. McDowell, planet4589.org
About this launch
Chinese classified satellite claimed to be for communication technology test purposes. Actual mission not known.
Pad
Launch Complex 2 (LC-2), Xichang Satellite Launch Center, People's Republic of China
122nd launch from Launch Complex 2 (LC-2), 8th this year · 234th from Xichang Satellite Launch Center, People's Republic of China
Local pad time at liftoff: Nov 21, 6:55 PM GMT+8, in twilight
126 launches from this pad · 242 from Xichang Satellite Launch Center, People's Republic of China
77 days after the previous launch from this pad
All launches from Xichang Satellite Launch Center, People's Republic of ChinaOpen in maps
Updates
Launch success.
Show 1 earlier update
Added launch per NOTAMs; Payload and launch vehicle identities highly uncertain.
Cosmic_Penguin · 11/17/2025 · source
Questions
When did TJSW-21 launch?
TJSW-21 launched on November 21, 2025 at 10:55 UTC. The launch window ran from 10:47 to 11:23 UTC.
Where can I watch TJSW-21?
No webcast is on record for this launch.
What rocket launched TJSW-21?
Long March 3B/E, flown by China Aerospace Science and Technology Corporation. Long March 3B/E spec sheet
Where did TJSW-21 launch from?
Launch Complex 2 (LC-2), Xichang Satellite Launch Center, People's Republic of China. Liftoff was Nov 21, 6:55 PM GMT+8 local time at the pad.
What orbit did TJSW-21 reach?
Tongxin Jishu Shiyan 21, one of 2 catalogued objects, reached a 213 × 40,092 km orbit inclined 51.0°.
How many satellites did TJSW-21 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).