Long March 4B | Zi Yuan 1-1

Long March 4B | Zi Yuan 1-1

Launch Complex 7
Taiyuan Satellite Launch Center, People's Republic of China













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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.


Zi Yuan 1-1

The CBERS (China Brazil Earth Resources Satellite) or ZY 1 (Zi Yuan) satellites are designed for global coverage and include cameras to make optical observations and a data collecting system to gather data on the environment. They are unique systems due to the use of on-board sensors which combine features that are especially designed to resolve the broad range of space and time scales involved in the monitoring and preservation of the ecosystem. They are operated jointly by the China Centre for Resources Satellite Data and Application (CRESDA) and the Brazilian INPE (Instituto Nacional de Pesquisas Espaciais, National Institute of Space Research).

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Long March 4B

Height 44.10 Meters

Max Stages 3

Mass To GTO 1500 kg

Liftoff Thrust 2961 kN

Diameter 3.35 Meters

Mass To LEO 4200 kg

Liftoff Mass 249 Tonnes

Launch Success 47

Consecutive Success 28

Maiden Flight 1999-05-10

Launch Failures 1

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