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Arabsat 3A


Also called Arabsat 2BSS1 or Badr 3

General


Designation 25638 / 99009A
Launch date 26 Feb 1999
Country of origin Arab States
Mission Telecommunications
Geostationary orbit see below
Launch vehicle Ariane V116

Satellite, launch and insurance is worth $200 million

Location


Begin End Position
L: 26 Feb 1999 Mar 1999 23.7°E (tests)
Apr 1999 Nov 2008 26°E
Nov 2008 Aug 2009 30.5°E, inclined


End of life


Out of service Aug 2009
Cause Moved to the junk orbit


On 7 Dec 2001, 8 transponders failed (might be a power switching panel problem or the loss of one of the solar array's power). An insurance claim for $170 million was filled and it was declared a total loss. Panamsat 5 was colocated to assist.

sat-index articles


Technical data


Lyngsat transponder loading


EIRP coverage (dBW)


Ku-band

G/T coverage (dB/K)


Ku-band

Specifications


Prime contractor Aerospatiale
Platform Spacebus-3000B
Mass at launch 2708 kg
Mass in orbit 1646 kg
Dry mass 1200 kg
Dimension 3.83 x 3.35 x 2.26 m at launch
Solar array 29 m
Stabilization 3-axis
DC power 6400 W
Design lifetime 12 years

Telecommand: 17.302 V & 17.305 H GHz
Telemetry: 11.702 V & 11.705 H GHz

has a DASA S400 liquid apogee engine

Ku-band


Main transponders 20
Backup transponders 8
Power (TWTA)
Bandwidth 34 MHz
Coverage  
EIRP max 48.5 dBW
G/T max 0.2 dB/K
Polarization linear H/V
Frequencies Uplink: 17.3-18.1 GHz
Downlink: 11.7-12.5 GHz


Transponder Frequency chart (GHz)


Horizontal
Uplink
Horizontal
Downlink
Channel Vertical
Downlink
Vertical
Uplink
  11.72748 1   17.32748
17.34666   2 11.74666  
  11.76584 3   17.36584
17.38502   4 11.78502  
  11.80420 5   17.40420
17.42338   6 11.82338  
  11.84256 7   17.44256
17.46174   8 11.86174  
  11.88092 9   17.48092
17.50010   10 11.90010  
  11.91928 11   17.51928
17.53848   12 11.93848  
  11.95764 13   17.55764
17.57682   14 11.97682  
  11.99600 15   17.5960
17.61518   16 12.01518  
  12.03436 17   17.63436
17.65354   18 12.05354  
  12.07272 19   17.67272
17.69190   20 12.09190  


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