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HJ 1A, 1B (SMMS 1)


HJ 1A and 1B (Huan Jing = Environment) satellites are small chinese Earth observation satellites operated by the China Centre for Resources Satellite Data and Application (CRESDA). The satellite constellation is composed of a number of small satellites, the ground system, and the application system. It will provide all-weather (3 to 100 m meter) imagery. The Huan Jing constellation consists of two small optical satellites, the HJ-1A and the HJ-1B, and one radar satellite, the HJ-1C.

The payload instrument on board includes a CCD camera (both), a hyper-spectral camera (HJ 1A) or an infrared camera (HJ 1B).

HJ 1A is also the Small Multi-Mission Satellite (SMMS) of Asia Pacific Space Cooperation Organization (APSCO) and it will be the important data resources of APSCO space application. SMMS is a joint venture payload between China, Iran, South Korea, Mongolia, Pakistan, Thailand and Bangladesh under the Asian-Pacific organization.

Nation: China
Type / Application: Earth observation
Operator: CRESDA
Contractors: DFH Satellite Co. Ltd of CAST
Configuration: CAST968B Bus
Power: 2 deployable solar arrays, batteries
Satellite COSPAR Date LS Launch Vehicle Remarks
HJ 1A (SMMS 1) 2008-041A 06.09.2008 TY LC-7 CZ-2C (3) SMA with HJ 1B
HJ 1B 2008-041B 06.09.2008 TY LC-7 CZ-2C (3) SMA with HJ 1A
Further HJ missions:


  • CAST Website