CBERS-2B

CBERS-2B
Mission type Remote sensing
Operator CNSA / INPE[1]
COSPAR ID 2007-042A
SATCAT № 32062
Mission duration 2 years planned[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 19 September 2007, 03:26:13 UTC[3]
Rocket Chang Zheng 4B
Launch site Taiyuan LC-7
End of mission
Last contact 10 May 2010
Orbital parameters
Reference system Geocentric
Regime Sun-synchronous
Semi-major axis 7,138.59 kilometres (4,435.71 mi)[4]
Eccentricity 0.0031332[4]
Perigee 745 kilometres (463 mi)[4]
Apogee 789 kilometres (490 mi)[4]
Inclination 98.26 degrees[4]
Period 100.04 minutes[4]
RAAN 85.98 degrees[4]
Argument of perigee 299.78 degrees[4]
Mean anomaly 14.39 degrees[4]
Mean motion 14.39[4]
Epoch 25 January 2015, 03:39:25 UTC[4]
Revolution number 38,590[4]

China–Brazil Earth Resources Satellite 2B (CBERS-2B), also known as Ziyuan I-02B or Ziyuan 1B2, was a remote sensing satellite operated as part of the China–Brazil Earth Resources Satellite programme between the China Centre for Resources Satellite Data and Application and Brazil's National Institute for Space Research.[1] The third CBERS satellite to fly, it was launched by China in 2007 to replace CBERS-2.[3]

CBERS-2B 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, which provided 1,100 watts of electricity for the satellite's systems.[2][5] The instrument suite aboard the CBERS-2B 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 High Resolution Camera (HRC) was a panchromatic imager with a resolution of 2.7 metres (8 ft 10 in) and a swath width of 27 kilometres (17 mi).[6] HRC replaced the lower-resolution Infrared Multispectral Scanner instrument flown on earlier CBERS satellites.[1]

A Chang Zheng 4B carrier rocket, operated by the China Academy of Launch Vehicle Technology, was used to launch CBERS-2B. The launch took place at 03:26:13 UTC on 19 September 2007, using Launch Complex 7 at the Taiyuan Satellite Launch Centre.[3] The satellite was successfully placed into a sun-synchronous orbit.[7]

CBERS-2B suffered a power system failure on 10 May 2010, leaving it unable to continue operations. As of 25 January 2015 it remains in orbit, with a perigee of 745 kilometres (463 mi), an apogee of 789 kilometres (490 mi), 98.26 degrees inclination and a period of 100.04 minutes. It has a semimajor axis of 7,138.59 kilometres (4,435.71 mi), and eccentricity of 0.0031332.[4]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 Krebs, Gunter. "CBERS 1, 2, 2B / ZY 1A, 1B, 1B2". Gunter's Space Page. Retrieved 1 December 2013.
  2. ↑ 2.0 2.1 2.2 2.3 "CBERS-1 (China-Brazil Earth Resources Satellite) - 1st Generation Satellite Series". Earth Observation Portal. European Space Agency. Retrieved 1 December 2013.
  3. ↑ 3.0 3.1 3.2 McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 1 December 2013.
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 "CBERS 2B Satellite details 2007-042A NORAD 32062". N2YO. 25 January 2015. Retrieved 25 January 2015.
  5. ↑ "CBERS-1, 2 and 2B Description". INPE. Retrieved 1 December 2013.
  6. ↑ "CBERS-1, 2 and 2B Cameras". INPE. Retrieved 1 December 2013.
  7. ↑ "UCS Satellite Database". Union of Concerned Scientists. Retrieved 1 December 2013.