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China Aerospace Science and Technology CorporationLong March 3C/YZ-1Launch Complex 2 (LC-2), Xichang Satellite Launch Center, People's Republic of China
Shiyan 29
Launched
September 5, 2025 · 02:34 UTC
Image: 我们的太空
Summary
Shiyan 29 launched on a China Aerospace Science and Technology Corporation Long March 3C/YZ-1 from Launch Complex 2 (LC-2), Xichang Satellite Launch Center, People's Republic of China on September 5, 2025 at 02:34 UTC. The launch window ran from 02:26 to 02:53 UTC. It was China Aerospace Science and Technology Corporation's 539th launch, 38th this year and humanity's 7,051st orbital launch attempt. It was the 3rd Long March 3C/YZ-1 flight and the 1st this year. The payload was bound for Geosynchronous Orbit (GSO). Shiyan 29, one of 3 catalogued objects, reached a 230 × 30,736 km orbit inclined 28.5°. 3 objects from this launch are catalogued, one of them a payload.
- Watch
- Booster
- No booster details on record.
- Mission
- Government/Top Secret · Geosynchronous Orbit (GSO)
- Milestone
- 3rd Long March 3C/YZ-1 flight · 1st this yearChina Aerospace Science and Technology Corporation's 539th launch38th this yearhumanity's 7,051st orbital launch attempt202nd orbital launch attempt this year
Flight preview
Orbit: as tracked
Shiyan 29 · NORAD 65486 · 2025-196 · Space-Track · tracking 1 of 3 objects
Show the numbers for orbit elements
- Object
- OBJECT A
- Object ID
- UNKNOWN
- Epoch
- 2025-09-05 17:04:58 UTC
- Mean motion
- 2.68724552 rev/day
- Eccentricity
- 0.6979601
- Inclination
- 28.502°
- Ascending node
- 21.8271°
- Arg. of perigee
- 128.0434°
- Mean anomaly
- 217.1303°
- Element set
- 999
- Rev at epoch
- 3
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: GSO.
Catalogued objects
3 catalogued: 1 payload, 2 rocket stages; 3 still in orbit
- Shiyan 29 · NORAD 65486 · in orbit
CZ-3C Y20 Stage 3 · in orbit
Yuanzheng-1 Y18 · in orbit
Data from J. McDowell, planet4589.org
About this launch
Satellite officially named for "space environment detection" purposes, exact details unknown.
Pad
Launch Complex 2 (LC-2), Xichang Satellite Launch Center, People's Republic of China
121st launch from Launch Complex 2 (LC-2), 7th this year · 231st from Xichang Satellite Launch Center, People's Republic of China
Local pad time at liftoff: Sep 5, 10:34 AM GMT+8, in daylight
126 launches from this pad · 242 from Xichang Satellite Launch Center, People's Republic of China
76 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 · 9/3/2025 · source
Questions
When did Shiyan 29 launch?
Shiyan 29 launched on September 5, 2025 at 02:34 UTC. The launch window ran from 02:26 to 02:53 UTC.
Where can I watch Shiyan 29?
Coverage: Long March-3C launches Shiyan-29. Watch the replay
What rocket launched Shiyan 29?
Long March 3C/YZ-1, flown by China Aerospace Science and Technology Corporation. Long March 3C/YZ-1 spec sheet
Where did Shiyan 29 launch from?
Launch Complex 2 (LC-2), Xichang Satellite Launch Center, People's Republic of China. Liftoff was Sep 5, 10:34 AM GMT+8 local time at the pad.
What orbit did Shiyan 29 reach?
Shiyan 29, one of 3 catalogued objects, reached a 230 × 30,736 km orbit inclined 28.5°.
How many satellites did Shiyan 29 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).