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Indostar 1 (Cakrawarta 1)

Indostar 1 [OSC]

Orbital built the IndoStar-1 or Cakrawarta 1 satellite for Media Citra Indovision to deliver the first direct-to-home (DTH) satellite television to Indonesia, the world's fourth most populous county.

IndoStar-1 is the world's first commercial communications satellite to use S-band frequencies, which efficiently penetrate the atmosphere and provide high-quality transmissions to small-diameter antennas in regions that experience heavy rainfall such as Indonesia. Similar performance is not economically feasible with comparable Ku- or C-band DTH satellite systems since more power is required in these bands to penetrate the moist atmosphere.

Under the $175 million contract, Orbital served as the prime contractor for the turn-key system, including the space, ground and user segments. Specifically, Orbital provided:

  • The complete INDOVISION satellite television broadcasting system, including total system engineering
  • Coordination of activities for the Ariane 4 launch
  • The ground station for spacecraft telemetry, tracking, control and monitoring
  • Design and engineering management of the integrated receiver and decoder units
  • Subscriber management and conditional access security systems
  • Complete program risk management, system operations and maintenance

Due to a failed power regulator, two of the satellite's five transponders cannot be used whenever the satellite is eclipsed by the Earth. During these periods, only 80 percent of the required power are available. The life span of the satellite might be reduced to seven years from a planned 14 years. Insurers paid US$25 million in damages.

Nation: Indonesia
Type / Application: Communication
Operator: Media Citra Indovision (MCI)
Contractors: CTA → Orbital Sciences Corporation (OSC)
Equipment: 5 active S-band transponders
Configuration: Star-1
Propulsion: Star-30E
Power: 2 deployable solar arrays, batteries
Lifetime: 14 years
Mass: 1350 kg (launch)
Orbit: GEO
Satellite COSPAR Date LS Launch Vehicle Remarks
Indostar 1 (Cakrawarta 1) 1997-071B 12.11.1997 Ko ELA-2 Ariane-44L H10-3 with Sirius 2 (GE 1E)


Further Indostar missions:

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