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BSat 2a, 2b

BSat 2a [OSC]

In November 1998, following an open international competition, Japan's Broadcasting Satellite System Corporation (B-SAT) selected Orbital to construct and launch two geosynchronous direct-to-home TV broadcast satellites. The BSAT-2a and -2b satellites were designed to provide direct-to-home digital high-definition television throughout Japan, relaying channels at higher resolution and in a wider-screen format than traditional analog systems.

BSAT-2a was launched in March 2001 and is providing broadcasting service. Upon completion of checkout, systems were functioning nominally. BSAT-2b, which was launched in July 2001, and intended to serve as on-orbit backup, was placed into an unusable incorrect orbit by an Ariane 5 rocket.

In another vote of confidence in Orbital's ability to deliver reliable, cost-effective GEO satellites, B-SAT awarded Orbital the contract for the slightly modified BSAT-2c, the replacement for BSAT-2b, in September 2001.

Nation: Japan
Type / Application: Communication
Operator: Broadcasting Satellite System Corporation (B-SAT)
Contractors: Orbital Sciences Corporation (OSC)
Equipment: 4 active high-power Ku-band transponders
Configuration: Star-1
Propulsion: Star-30CBP
Power: 2 deployable solar arrays, batteries
Lifetime: 10-years (fueled for over 11.5 years)
Mass: 1292 kg
Orbit: GEO
Satellite COSPAR Date LS Launch Vehicle Remarks
BSat 2a 2001-011B 08.03.2001 Ko ELA-3 Ariane-5G with Eurobird 1
BSat 2b 2001-029B 12.07.2001 Ko ELA-3 P Ariane-5G with Artemis


  • Orbital Sciences Corp.: BSAT
Further BSat missions:

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