Asiasat 1

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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

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Location

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

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End of life

Out of service	Jan 2003
Cause	Moved to the junk orbit

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External resources

sat-index articles

Technical data

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EIRP coverage (dBW)

North beam
South beam

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G/T coverage (dB/K)

North beam
South beam

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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

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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

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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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