Launches / Long March 2C/YZ-1S

Past launch Launched successfully

4 x SatNet test satellites

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

Long March 2C/YZ-1S lifting off with the 4 x SatNet test satellites mission
Image via The Space Devs.

This was China Aerospace Science and Technology Corporation's 41st launch of 2025, and its 542nd in all.

Counting every operator, it was the 215th orbital launch attempt anywhere in 2025, and the eighth from Launch Area 94 (SLS-2 / 603).

Launched
Tuesday, Sept. 16, 2025, 1:06 a.m. UTC
Window
Tuesday, Sept. 16, 2025, 12:58 to 1:25 a.m. UTC
Launch site
Jiuquan Satellite Launch Center, China
Rocket
Long March 2C/YZ-1S
Operator
China Aerospace Science and Technology Corporation

Watch the webcast →

The mission

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

Type
Communications
Destination
Low Earth orbit

The rocket

The Long March 2C is a family of expendable launch vehicles made and operated by China. It is a two stage launch vehicle with storable propellants, consisting of Nitrogen Tetroxide and Unsymmetrical Dimethylhydrazine.

Height
42 m
Built by
China Aerospace Science and Technology Corporation
First flew
October 9, 2018
Lifts to low Earth orbit
3,850 kg
View 5 specifications Show less
Lifts to geostationary transfer
1,250 kg
Diameter
3.4 m
Mass at liftoff
233 t
Thrust at liftoff
2,962 kN
Stages
3

10 flights, 9 of them successful.

Wikipedia →

The operator

China Aerospace Science and Technology Corporation

The China Aerospace Science and Technology Corporation (CASC) is the main contractor for the Chinese space program. It is state-owned and has a number of subordinate entities which design, develop and manufacture a range of spacecraft, launch vehicles, strategic and tactical missile systems, and ground equipment. It was officially established in July 1999 as part of a Chinese government reform drive, having previously been one part of the former China Aerospace Corporation. Various incarnations of the program date back to 1956.

Sector
Government
Based in
China
Founded
1999
Run by
Lei Fanpei, Chairman & President

612 launches so far, 596 of them successful. The last 3 in a row went to plan.

english.spacechina.com → Wikipedia →

The launch site

It went up from Launch Area 94 (SLS-2 / 603) at Jiuquan Satellite Launch Center, China.

See the pad on a map →

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