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TUBSAT-1 was launched from the Kourou Space Center in French Guiana as a secondary payload on the same Ariane rocket with three other secondary payloads UOSAT-F, ORBCOMM-X, and SARA, and the primary payload ERS-1. The TUBSAT microsatellites are designed and built at the Technical University of Berlin (TUB). The primary objective of TUBSAT-1 is academic research, particularly in the field of attitude determination. It was financed by the German BMFT. The orbit is 10:30am sun-synchronous, circular, with an inclination of 98.5 degrees and a height of 780km. Tubsat weighs 35kg, and has a cubical shape with 380mm sides. It has a three axis star sensor, a fixed momentum wheel and magnetorquer coil, a two axis sun-sensor and three axis magnetometer. The communication systems employ frequencies in the amateur satellite service VHF and UHF bands.

Alternate Names

  • 21577

Facts in Brief

Launch Date: 1991-07-17
Launch Vehicle: Ariane 40
Launch Site: Kourou, French Guiana
Mass: 25.7 kg

Funding Agency

  • Technical University of Berlin (Federal Republic of Germany)


  • Communications

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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