Sinosat 1A --> Zhongxing 5B

China (PR)

Spacecraft Nº:

Chinese spacecraft Nº: 58

Also called: Xinnuo 1

Launch data:

Designation	25404 / 98044A
Launch date	18 Jul 1998
Launch site	Xichang, LC-2
Launch vehicle	CZ-3B (#51)
Mission	Communications
Geostationary orbit:
Perigee / Apogee	36074 x 36130 km
Eccentricity
Inclination	1.8 deg
Period	1451.9 min
Location	110.5°E

Operated by Sino Satellite Communications. Options for 2 other satellites are available. Project financed by CASC and DASA.

Operational since 4 Dec 1998

Specifications

Prime contractor	EuraSpace (with Aerospatiale as lead)
Platform	Spacebus-3000
Operator	Xinnuo weixing TG --> China Satcom
Mass at launch	2820 kg
Mass in orbit	1600 kg
Dry mass	1160 kg
Dimension
Solar array	26.3 m span
Stabilization	3-axis
DC power	EOL: 5300 W (payload power: 3913 W)
Design lifetime	15 years

Has 2 deployable 1.6 and 1.8 m diameter antennas and a fixed 1 m antenna.

EurasSpace had to ask Aerospatiale to handle the design because of the failure of EurasSpace's first satellite failure, Dong Fang Hong 41. Sinosat 2 should be the real second EurasSpace satellite.

Satellite tracking:

Real time satellite tracking

C-band

Main transponders	23 + 1 (crosslink 54 MHz)
Backup transponders	8
Power	21 W
Bandwidth	36 MHz
Coverage	China down to Indonesia
EIRP max	39.5 dBW
G/T max	0 dB/K
Polarization	linear H/V
Frequencies	uplink: 5.845-6.425 GHz downlink: 3.625-4.200 GHz telemetry in transfer orbit: 4.193 & 4.198 GHz

Command: 6.412 & 6.418 GHz

C-band transponder frequency chart (GHz)

Horizontal Uplink	Horizontal Downlink	Transponder	Vertical Downlink	Vertical Uplink
	3.700	1B		5.925
5.945		1A	3.720
	3.740	2B		5.965
5.985		2A	3.760
	3.780	3B		6.005
6.025		3A	3.800
	3.820	4B		6.045
6.065		4A	3.840
	3.860	5B		6.085
6.105		5A	3.880
	3.900	6B		6.125
6.145		6A	3.920
	3.940	7B		6.165
6.185		7A	3.960
	3.980	8B		6.205
6.225		8A	4.000
	4.020	9B		6.245
6.265		9A	4.040
	4.060	10B		6.285
6.305		10A	4.080
	4.100	11B		6.325
6.345		11A	4.120
	4.151	12B (54 MHz)		6.376
6.385		12A	4.160

Ku-band

Main transponders	14 + 1 (crosslink)
Backup transponders	4
Power	97 W
Bandwidth	54 MHz
Coverage	China, Hong Kong and Taiwan
EIRP max	54.5 dBW
G/T max	10 dB/K
Polarization	linear H/V
Frequencies	uplink: 14-14.5 GHz downlink: 12.25-12.75 GHz beacons: 12.260 & 12.26040 GHz

includes a pair of C- Ku- band crosslinked channels

Ku-band transponder frequency chart (GHz)

Horizontal Uplink	Horizontal Downlink	Transponder	Vertical Downlink	Vertical Uplink
14.070		1A	12.320
	12.350	1B		14.100
14.130		2A	12.380
	12.410	2B		14.160
14.190		3A	12.440
	12.470	3B		14.220
14.250		4A	12.500
	12.530	4B		14.280
14.310		5A	12.560
	12.590	5B		14.340
14.370		6A	12.620
	12.650	6B		14.400
14.430		7A	12.680
	12.710	7B		14.460

Mission details:

The Sinosat broadcasting satellites Xinnuo 1 and 3, previously operated by the Xinnuo weixing TG, have been renamed Zhongxing 5B and 5C since that company's merger into China Satcom. (Aug 2010)

Ref: #7(JR632), #15, #228 - update: 16.11.13