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Asiasat 2


Also called Amos 5i

General


Designation 23723 / 95064A
Launch date 28 Nov 1995 at 11:30 UT
Country of origin China
Mission Telecommunications
Geostationary orbit see below
Launch vehicle Long March 2E

Second stage orbit: 185 km x 309 km x 28° Then the Chinese perigee kick motor SPTM-17 (second flight) lifted Asiasat to 222 x 35039 km x 25.6° and the liquid apogee motor (a Leros-class dual mode liquid apogee engine built by Royal Ordnance plc, England) then circularized the orbit.

Cost: $200 million

Amos 5i provides Pan-African C-band and Middle-East + North Africa Ku-band coverage. The satellite is running out of fuel and should reach EOL in early 2011.

Location


Begin End Position
L: 28 Nov 1995 Oct 2009 100.5°E
Jan 2010 Oct 2010 17°E, renamed Amos 5i
Oct 2010 Sep 2011 17°E, inclined
Jan 2012 May 2012 120°E, inclined


End of life


Out of service May 2012
Cause moved to the junk orbit

sat-index articles


Technical data



EIRP coverage at 100.5°E (dBW)


C-band
Ku1 Ku-band
Ku2 Ku-band

Specifications


Prime contractor GE Astro Space
Platform GE-7000
Mass at launch 3460 kg
Mass in orbit 1500 kg
Dimension 24 x 7 m deployed
Stabilization 3-axis
DC power BOL: 7100 W
Design lifetime 13 years

The perigee engine was made in China and is being used for the first time.

C-band


Main transponders 24
Backup transponders 6
Power 55 W (TWTA)
Bandwidth 20 transponders at 36 MHz
4 transponders at 72 MHz
Coverage Africa & Middle East
EIRP max 39 dBW
G/T max 0 dB/K
SFD -97 dBW/m²
Polarization Linear H/V
Frequencies Uplink: 5.845-6.425 GHz
Downlink: 3.625-4.2 GHz

2 beacons pure carrier at 4.1975 H and 4.1995 H GHz

Transponder frequency chart (GHz)


Horizontal
downlink
Transponder Vertical
downlink
Bandwidth (MHz)
3.640 1B   36
  1A 3.660 36
3.680 2B   36
  2A 3.700 36
3.720 3B   36
  3A 3.740 36
3.760 4B   36
  4A 3.780 36
3.800 5B   36
  5A 3.820 36
3.840 6B   36
  6A 3.860 36
3.880 7B   36
  7A 3.900 36
3.920 8B   36
  8A 3.940 36
3.960 9B   36
  9A 3.980 36
4.000 10B   36
  10A 4.020 36
4.060 11B   72
  11A 4.080 72
4.140 12B   72
  12A 4.160 36


Ku-band


Main transponders 9
Backup transponders 3
Power 115 W (TWTA)
Bandwidth 54 MHz
Coverage Middle East & North Africa
EIRP max 52 dBW
G/T max 6 dB/K
SFD -97 dBW/m²
Polarization Linear
Frequencies Uplink: 14.0-14.3 GHz
Downlink: 12.2-12.5 GHz


Transponder frequency chart (GHz)


Horizontal
downlink
Transponder Vertical
downlink
12.230 1  
  2 12.245
12.290 3  
  4 12.305
12.350 5  
  6 12.365
12.410 7  
  8 12.425
12.470 9  

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