CBERS-1

CBERS-1

Line drawing of the CBERS/ZY-1 spacecraft
Mission type Remote sensing
Operator CNSA / INPE[1]
COSPAR ID 1999-057A
SATCAT № 25940
Website CBERS
Mission duration 2 years[2]
Spacecraft properties
Spacecraft type CBERS
Bus Phoenix-Eye 1[1]
Launch mass 1,450 kilograms (3,200 lb)[2]
Power 1,100 watts[2]
Start of mission
Launch date 14 October 1999, 03:15 (1999-10-14UTC03:15Z) UTC[3]
Rocket Chang Zheng 4B
Launch site Taiyuan LC-7
End of mission
Disposal Decommissioned
Deactivated September 2003 (2003-10)[4]
Orbital parameters
Reference system Geocentric
Regime Sun-synchronous
Semi-major axis 7,153.45 kilometres (4,444.95 mi)
Eccentricity 0.0004025
Perigee 779 kilometres (484 mi)
Apogee 785 kilometres (488 mi)
Inclination 98.34 degrees
Period 100.35 minutes
Epoch 30 November 2013, 20:57:46 UTC[5]

China–Brazil Earth Resources Satellite 1 (CBERS-1), also known as Ziyuan I-01 or Ziyuan 1A, is a remote sensing satellite which was operated as part of the China–Brazil Earth Resources Satellite programme between the China National Space Administration and Brazil's National Institute for Space Research.[1] The first CBERS satellite to fly, it was launched by China in 1999.[3]

CBERS-1 was a 1,450-kilogram (3,200 lb) spacecraft built by the China Academy of Space Technology and based on the Phoenix-Eye 1 satellite bus.[1] The spacecraft was powered by a single solar array, providing 1,100 watts of electricity for the satellite's systems.[2][6] The instrument suite aboard the CBERS-1 spacecraft consisted of three systems: the Wide Field Imager (WFI) produced visible-light to near-infrared images with a resolution of 260 metres (850 ft) and a swath width of 890 kilometres (550 mi); a high-resolution CCD camera was used for multispectral imaging at a resolution of 20 metres (66 ft) with a swath width of 113 kilometres (70 mi); the third instrument, the Infrared Multispectral Scanner (IMS), had a resolution of 80 metres (260 ft) and a swath width of 120 kilometres (75 mi).[7]

A Chang Zheng 4B carrier rocket, operated by the China Academy of Launch Vehicle Technology, was used to launch CBERS-1. The launch took place at 03:15 UTC on 14 October 1999, using Launch Complex 7 at the Taiyuan Satellite Launch Centre.[3] The satellite was successfully placed into a sun-synchronous orbit.

CBERS-1 was decommissioned in September 2003, almost four years after launch.[4] The derelict satellite remains in orbit; as of 30 November 2013 it is in an orbit with a perigee of 779 kilometres (484 mi), an apogee of 785 kilometres (488 mi), 98.34 degrees inclination and a period of 100.35 minutes. The orbit has a semimajor axis of 7,153.45 kilometres (4,444.95 mi), and eccentricity of 0.0004025.[5]

References

  1. 1 2 3 4 Krebs, Gunter. "CBERS 1, 2, 2B / ZY 1A, 1B, 1B2". Gunter's Space Page. Retrieved 1 December 2013.
  2. 1 2 3 4 "CBERS-1 (China-Brazil Earth Resources Satellite) - 1st Generation Satellite Series". Earth Observation Portal. European Space Agency. Retrieved 1 December 2013.
  3. 1 2 3 McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 1 December 2013.
  4. 1 2 "Civil Commercial Imagery Evaluation Workshop" (PDF). United States Geological Survey. 2007. Retrieved 1 December 2013.
  5. 1 2 "CBERS 1 Satellite details 1999-057A NORAD 25940". N2YO. 30 November 2013. Retrieved 1 December 2013.
  6. ↑ "CBERS-1, 2 and 2B Description". INPE. Retrieved 1 December 2013.
  7. ↑ "CBERS-1, 2 and 2B Cameras". INPE. Retrieved 1 December 2013.
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