Long March 4B | Huanjing 2A, 2B

Long March 4B | Huanjing 2A, 2B

Launch Complex 9
Taiyuan, 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.

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Huanjing 2A, 2B

Huanjing (abbreviated as HJ) is a constellation of environmental monitoring satellites. The HJ-2A and HJ-2B are 16-meter optical satellites which will provide 16-meter multispectral, 48-meter hyperspectral and infrared image data.

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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 44

Consecutive Success 24

Maiden Flight 1999-05-10

Launch Failures 1


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