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Double Star 1



Double Star 1 (also known as Tan Ce 1, and TC 1) is a Sino-European (CSNA-ESA) satellite that was launched by a Long March 2C/SM rocket from Xichang Satellite Launch Center in the Sichuan province of China (PRC) at 19:06 UT on 29 December 2003. The 330 kg, 260 W satellite is cylindrical, with a diameter of 2.1 m, a height of 1.4 m, and spins at a rate of 15 rpm. It carries eight instruments to probe Earth's magnetosphere, five from ESA and three from CNSA. (The ESA instruments are legacies from ESA's Cluster mission.) The data from all instruments will be stored on-board and dumped over three grounds stations: Shanghai and Beifing in China, and Villafranca in Spain. There will be coordination between the Cluster and Double Star missions. For more information, see

In the early morning on 14 October 2007, the satellite re-entered the Earth's atmosphere and disintegrated during its descent.

Alternate Names

  • 28140
  • DoubleStar1
  • TC 1
  • Tan Ce 1

Facts in Brief

Launch Date: 2003-12-29
Launch Vehicle: Long March 2C/SM
Launch Site: Xichang, Peoples Republic of China
Mass: 330 kg
Nominal Power: 260 W

Funding Agencies

  • China National Space Administration (Peoples Republic of China)
  • European Space Agency (International)


  • Space Physics

Additional Information

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



NameRoleOriginal AffiliationE-mail
Dr. Christophe Philippe EscoubetProject ScientistESA-European Space Research and Technology
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