Chinastar 1

Also called Zhongwei 1, Chinasat 5A

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General

Designation	25354 / 98033A
Launch date	30 May 1998
Country of origin	China
Mission	Telecommunications
Geostationary orbit	see below
Launch vehicle	Long March 3B

Operated by COTS

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Location

Begin	End	Position
L: 30 May 1998	Aug 2013	87.5°E
Oct 2013	Feb 2016	142°E (while waiting for Apstar 9)
Feb 2016	Mar 2016	141°E, inclined
Apr 2016	Dec 2016	163°E, inclined
Feb 2017	Jun 2018	125.5°E, inclined, replaced by Sinosat 6

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End of life

Out of service	Jun 2018
Cause	Sent to junk orbit

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External resources

http://www.chinastar.com.cn/english/english.html

sat-index articles

Technical data

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Lyngsat transponder loading

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EIRP coverage (dBW)

C-band
Ku-band

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G/T coverage (dB/K)

C-band
Ku-band

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Specifications

Prime contractor	Lockheed Martin
Platform	A2100
Mass at launch	2984 kg
Mass in orbit
Dry mass	1418 kg
Dimension	1.8 x 2.0 x 2.8 m
Solar array
Stabilization	3-axis
DC power	BOL: 8394 W EOL: 6797 W
Design lifetime	15 years

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C-band

Main transponders	12 + 6
Backup transponders	6
Power	45 W
Bandwidth	12 x 36 MHz 6 x 72 MHz
Coverage
G/T max	1 dB/K
EIRP max	41 dBW
Polarization	linear H/V

Beacon frequency: 3.7005 GHz (V) and 4.1995 GHz (H)

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C-band Transponder frequency chart (GHz)

Horizontal Uplink	Horizontal Downlink	Transponder	Vertical Downlink	Vertical Uplink
	3.720	1A		5.945
5.955		1B	3.740
	3.760	2A		5.985
6.005		2B	3.780
	3.800	3A		6.025
6.045		3B	3.820
	3.840	4A		6.065
6.085		4B	3.860
	3.880	5A		6.105
6.125		5B	3.900
	3.920	6A		6.145
6.165		6B	3.940
	3.980	7A		6.205
6.775		7B	4.000
	4.060	8A		6.285
6.805		8B	4.080
	4.140	9A		6.365
6.855		9B	4.160

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Ku-band

Main transponders	16 + 4
Backup transponders	10
Power	85 W at 36 MHz 115 W at 72 MHz
Bandwidth	16 x 36 MHz 4 x 72 MHz
Coverage	China
G/T max	5 dB/K
EIRP max	52 dBW at 36 MHz 54 dBW at 72 MHz
Polarization	linear H/V

Beacon frequency: 12.2505 GHz (V) and 12.7495 GHz (H)

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Ku-band Transponder frequency chart (GHz)

Horizontal Uplink	Horizontal Downlink	Transponder	Vertical Downlink	Vertical Uplink
	12.290	10A		14.038
14.058		10B	12.310
	12.370	11A		14.118
14.138		11B	12.390
	12.430	12A		14.178
14.198		12B	12.450
	12.470	13A		14.218
14.238		13B	12.490
	12.510	14A		14.258
14.278		14B	12.530
	12.550	15A		14.298
14.318		15B	12.570
	12.590	16A		14.338
14.358		16B	12.510
	12.630	17A		14.378
14.398		17B	12.550
	12.670	18A		14.418
14.438		18B	12.690
	12.710	19A		14.458
14.478		19B	12.730

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