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Asiasat 1



General


Designation 20558 / 90030A
Launch date 7 Apr 1990
Country of origin China
Mission Telecommunications
Geostationary orbit see below
Launch vehicle Long March 3

This satellite was Westar 6 that was brought back from Space by the Shuttle in 1984. It was bought for only $58 million

Location


Begin End Position
L: 7 Apr 1990 Jun 1999 105.5°E
Aug 1999 Jan 2003 122°E, inclined


End of life


Out of service Jan 2003
Cause Moved to the junk orbit


External resources


sat-index articles


Technical data



EIRP coverage (dBW)


North beam
South beam

G/T coverage (dB/K)


North beam
South beam

Specifications


Prime contractor Hughes
Platform HS-376
Mass at launch 1244 kg
Mass in orbit 620 kg
Diameter 2.16 m
Height 6.6 m (2.84 m stowed)
Stabilization Spin stabilized
DC power BOL: 850 W
Design lifetime 9 years


C-band


Main transponders 24
Backup transponders 6
Power 8.5 W (TWTA)
Bandwidth 36 MHz
Coverage and
EIRP max
North beam: 36 dBW
South beam: 37 dBW
G/T max 3 dB/K
SFD -81 to -90 dBW/m²
Polarization linear H/V


Transponder frequency chart (GHz)


Horizontal
Uplink
Horizontal
Downlink
Transponder Vertical
Downlink
Vertical
Uplink
  3.720 1H   5.945
5.965   1V 3.740  
  3.760 2H   5.985
6.005   2B 3.780  
  3.800 3H   6.025
6.045   3V 3.820  
  3.840 4H   6.065
6.085   4V 3.860  
  3.880 5H   6.105
6.125   5V 3.900  
  3.920 6H   6.145
6.165   6V 3.940  
  3.960 7H   6.185
6.205   7V 3.980  
  4.000 8H   6.225
6.245   8V 4.020  
  4.040 9H   6.265
6.285   9V 4.060  
  4.080 10H   6.305
6.325   10V 4.100  
  4.120 11H   6.345
6.365   11V 4.140  
  4.160 12H   6.385
6.405   12V 4.180  

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