China Aerospace Science and Technology CorporationLong March 2C/YZ-1SLaunch Area 94 (SLS-2 / 603), Jiuquan Satellite Launch Center, People's Republic of China

4 x SatNet test satellites

Name: 4 x SatNet test satellites launch
Start: 2025-09-16T01:06:00.000Z
End: 2025-09-16T01:25:00.000Z
Location: Launch Area 94 (SLS-2 / 603), Jiuquan Satellite Launch Center, People's Republic of China

Launched

September 16, 2025 · 01:06 UTC

Launch Successful

Summary

4 x SatNet test satellites launched on a China Aerospace Science and Technology Corporation Long March 2C/YZ-1S from Launch Area 94 (SLS-2 / 603), Jiuquan Satellite Launch Center, People's Republic of China on September 16, 2025 at 01:06 UTC. The launch window ran from 00:58 to 01:25 UTC. It was China Aerospace Science and Technology Corporation's 542nd launch, 41st this year and humanity's 7,064th orbital launch attempt. It was the 9th Long March 2C/YZ-1S flight and the 1st this year. The payload was bound for low Earth orbit (LEO). Xingwang Jishu SW 07-01, one of 5 catalogued objects, reached a 815 × 818 km orbit inclined 50.0°. 5 objects from this launch are catalogued, 4 of them payloads.

Watch: Long March-2C launches “Satellite Internet Technology Test Satellite”SciNews
Vehicle: Long March 2C/YZ-1S · China Aerospace Science and Technology Corporation
Booster: No booster details on record.
Mission: Communications · Low Earth Orbit (LEO)
Milestone: 9th Long March 2C/YZ-1S flight · 1st this yearChina Aerospace Science and Technology Corporation's 542nd launch41st this yearhumanity's 7,064th orbital launch attempt215th orbital launch attempt this year

Flight preview

Orbit: as tracked

50.0°Inclination

815 × 818 kmPerigee × apogeefrom mean elements

101.1 minPeriodfrom mean elements

336.6°Ascending node

394 d agoElement epoch2025-09-16 15:43 UTC · stale

Xingwang Jishu SW 07-01 · NORAD 65617 · 2025-209 · Space-Track · tracking 1 of 5 objects

Show the numbers

Object: OBJECT A
Object ID: 2025-209A
Epoch: 2025-09-16 15:43:50 UTC
Mean motion: 14.24711389 rev/day
Eccentricity: 0.00022836
Inclination: 50.001°
Ascending node: 336.5716°
Arg. of perigee: 154.3109°
Mean anomaly: 205.7918°
Element set: 999
Rev at epoch: 9
B*: -0.000014922606

Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO.

Catalogued objects

5 catalogued: 4 payloads, 1 rocket stage; 4 still in orbit

Xingwang Jishu SW 07-01 · NORAD 65617 · in orbit
Xingwang Jishu SW 07-02 · NORAD 65618 · in orbit
Xingwang Jishu SW 07-03 · NORAD 65619 · in orbit
Xingwang Jishu SW 07-04 · NORAD 65620 · in orbit

Yuanzheng-1S Y19? · re-entered September 19, 2025

Data from J. McDowell, planet4589.org

About this launch

Officially described as "Satellite-Internet Technology Demonstration Satellite(s)". Probably 4 test satellites for the Chinese state-owned LEO communication satellite constellation SatNet.

Pad

Launch Area 94 (SLS-2 / 603), Jiuquan Satellite Launch Center, People's Republic of China

127th launch from Launch Area 94 (SLS-2 / 603), 8th this year · 258th from Jiuquan Satellite Launch Center, People's Republic of China

Local pad time at liftoff: Sep 16, 9:06 AM GMT+8, in daylight

138 launches from this pad · 299 from Jiuquan Satellite Launch Center, People's Republic of China

93 days after the previous launch from this pad

All launches from Jiuquan Satellite Launch Center, People's Republic of China Open in maps

Updates

Launch success.

Cosmic_Penguin · Sep 16, 2025 · source

Show 2 earlier updates

Delayed to September 16 per NOTAMs.
Cosmic_Penguin · 9/15/2025 · source
Added launch per NOTAMs; Payload and launch vehicle identities uncertain.
Cosmic_Penguin · 9/9/2025 · source

Questions

When did 4 x SatNet test satellites launch?

4 x SatNet test satellites launched on September 16, 2025 at 01:06 UTC. The launch window ran from 00:58 to 01:25 UTC.

Where can I watch 4 x SatNet test satellites?

Coverage: Long March-2C launches “Satellite Internet Technology Test Satellite”. Watch the replay

What rocket launched 4 x SatNet test satellites?

Long March 2C/YZ-1S, flown by China Aerospace Science and Technology Corporation. Long March 2C/YZ-1S spec sheet

Where did 4 x SatNet test satellites launch from?

Launch Area 94 (SLS-2 / 603), Jiuquan Satellite Launch Center, People's Republic of China. Liftoff was Sep 16, 9:06 AM GMT+8 local time at the pad.

What orbit did 4 x SatNet test satellites reach?

Xingwang Jishu SW 07-01, one of 5 catalogued objects, reached a 815 × 818 km orbit inclined 50.0°.

How many satellites did 4 x SatNet test satellites launch?

4 payloads from this launch are catalogued, 4 of them still in orbit (Data from J. McDowell, planet4589.org).