Intelsat 901

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Intelsat 901
Mission type Communications
Operator Intelsat
COSPAR ID 2001-024A
SATCAT № 26824
Mission duration 13 years
Spacecraft properties
Bus HS301
Manufacturer Space Systems/Loral
Launch mass 4,723.0 kilograms (10,412.4 lb)
Power 8.600 watts
Start of mission
Launch date 9 June 2001, 23:47:50 (2001-06-09UTC23:47:50Z) UTC
Rocket Ariane 44L V148
Launch site Kourou ELA-2
Contractor Arianespace
Orbital parameters
Reference system Geocentric
Regime GEO
Longitude First orbital position: 67.5° W
Current orbital position: 18.0° W
Bandwidth 36 and 72 MHz

C-band global beam 36 dBW C-band Hemi Beam 38 dBW C-band beam zone 38 dBW Ku-band 53 dBW Europe Spot 1

Spot 2 Ku-band Europe 52 dBW

Intelsat 901 (IS-901) was the first of 9 new Intelsat satellites launched in June 2001 at 342°E, providing Ku-band spot beam coverage for Europe, as well as C-band coverage for the Atlantic Ocean region, and provides features such as selectable split uplink for SNG, tailored for increased communications demands such as DTH and Internet.


  • Increased power – IS-901 is designed to provide up to 5 dB for downlink e.i.r.p., and up to 1.8 dB for G/T over the IS-VII satellites.
  • Increased Capacity – With over 72 C-band 36 MHz equivalent unit transponders, IS-901 provides a significant increase in capacity over the previous satellite at 342°E.
  • Improved Coverage – IS-901 provides significantly expanded zone coverage. The Ku-band spot beams also include more area within each zone.


  • Total Transponders: Ku-Band: up to 22 (in equiv. 36 MHz units)
  • Polarization: Ku-Band: Linear - Horizontal or Vertical
  • Uplink Frequency: Ku-Band: 14.00 to 14.50 GHz
  • Downlink Frequency: Ku-Band: 10.95 to 11.20 GHz and 11.45 to 11.70 GHz
  • G/T (Ku-Band) (Beam Peak): Spot 1: up to +9.0 dB/K, Spot 2: up to +9.0 dB/K
  • SFD Range (Beam Edge): Ku-Band: -87.0 to -69.0 dBW/m²


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