China Aerospace Science and Technology CorporationLong March 3B/ELaunch Complex 3 (LC-3/LA-1), Xichang Satellite Launch Center, People's Republic of China
TJSW-17
Launched
April 10, 2025 · 16:47 UTC
Image: China Aerospace Science and Technology Corporation
Summary
TJSW-17 launched on a China Aerospace Science and Technology Corporation Long March 3B/E from Launch Complex 3 (LC-3/LA-1), Xichang Satellite Launch Center, People's Republic of China on April 10, 2025 at 16:47 UTC. The launch window ran from 16:37 to 17:12 UTC. It was China Aerospace Science and Technology Corporation's 516th launch, 15th this year and humanity's 6,924th orbital launch attempt. It was the 68th Long March 3B/E flight and the 6th this year. The payload was bound for Geostationary Transfer Orbit (GTO). Tongxin Jishu Shiyan 17, one of 3 catalogued objects, reached a 211 × 36,186 km orbit inclined 19.0°. 3 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 · Geostationary Transfer Orbit (GTO)
- Milestone
- 68th Long March 3B/E flight · 6th this yearChina Aerospace Science and Technology Corporation's 516th launch15th this yearhumanity's 6,924th orbital launch attempt75th orbital launch attempt this year
Flight preview
Orbit: as tracked
Tongxin Jishu Shiyan 17 · NORAD 63524 · 2025-073 · Space-Track · tracking 1 of 3 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2025-073A
- Epoch
- 2025-04-10 19:02:23 UTC
- Mean motion
- 2.25423644 rev/day
- Eccentricity
- 0.7321005
- Inclination
- 18.9941°
- Ascending node
- 88.8121°
- Arg. of perigee
- 179.6083°
- Mean anomaly
- 63.2804°
- Element set
- 999
- Rev at epoch
- 1
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: GTO. Ascent drawn from padside's representative profile.
Catalogued objects
3 catalogued: 1 payload, 1 rocket stage, 1 component; 3 still in orbit
- Tongxin Jishu Shiyan 17 · NORAD 63524 · in orbit
CZ-3B Y107 Stage 3 · in orbit
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 3 (LC-3/LA-1), Xichang Satellite Launch Center, People's Republic of China
99th launch from Launch Complex 3 (LC-3/LA-1), 3rd this year · 223rd from Xichang Satellite Launch Center, People's Republic of China
Local pad time at liftoff: Apr 11, 12:47 AM GMT+8, at night
108 launches from this pad · 242 from Xichang Satellite Launch Center, People's Republic of China
31 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 uncertain.
Cosmic_Penguin · 4/9/2025 · source
Questions
When did TJSW-17 launch?
TJSW-17 launched on April 10, 2025 at 16:47 UTC. The launch window ran from 16:37 to 17:12 UTC.
Where can I watch TJSW-17?
No webcast is on record for this launch.
What rocket launched TJSW-17?
Long March 3B/E, flown by China Aerospace Science and Technology Corporation. Long March 3B/E spec sheet
Where did TJSW-17 launch from?
Launch Complex 3 (LC-3/LA-1), Xichang Satellite Launch Center, People's Republic of China. Liftoff was Apr 11, 12:47 AM GMT+8 local time at the pad.
What orbit did TJSW-17 reach?
Tongxin Jishu Shiyan 17, one of 3 catalogued objects, reached a 211 × 36,186 km orbit inclined 19.0°.
How many satellites did TJSW-17 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).
![[AUTO] Long March 3B/E | ChinaSat 26 - image](/media?u=https%3A%2F%2Fthespacedevs-prod.nyc3.digitaloceanspaces.com%2Fmedia%2Fimages%2Flong2520march_image_20230907120240.jpeg&w=1600)