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Also called Zi Yuan 1B


Designation 28057 / 03049A
Launch date 21 Oct 2003
Country of origin China / Brazil
Mission Remote sensing
Perigee/Apogee 778 km, sun-synchronous
Inclination 98.5°
Period repeat period: 20 days
Launch vehicle Long March #70

The satellite is controlled by China for half a year, with the rest of time being handled by Brazil. Beazil paid 30% of the cost of the satellite.

In 2006, the satellite experiences power shortage which leads to switch off the main camera for some time.

External resources

sat-index articles

Technical data


Prime contractor CASC/INPE
Mass at launch 1450 kg
Mass in orbit  
Dimension 1.8 x 1.9 m
Solar array 8.3 x 3.3 m
Stabilization 3-axis
DC power 1100 W
Design lifetime 2 years

Downlink freq: 180.014 & 480.040 MHz

5-channel linear CCD detector (visible, IR, panchromatic)

Wavebands 0.59-0.89 µm
0.5-12.9 µm
Swath width 113 km
Resolution Visible: 19 m
IR: 80 m
Sideway pointing: +/- 32°

Wide-field imager

Wavebands 0.66 µm (green)
0.83 µm (near IR)
Resolution 260 m
Swath width 890 km

Infrared Multispectral Scanner (IR-MSS)

Wavebands 4 bands including thermal
Swath width 120 km
Resolution IR: 80 m
Thermal: 160 m
Sideway pointing: +/- 32°

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