The DOUBLESTAR TC-1 satellite, also known as Tan Ce 1, was launched on December 29, 2003, from Xichang Satellite Launch Center (XICLF) using the Chang Zheng 2C launch vehicle. It has a cylindrical body with two antennas and measures 2.1 meters in length and 1.4 meters in diameter, with a span of 10 meters. The satellite's dry mass is 350 kg, which is consistent with its launch mass. It was manufactured by DFH for the China Aerospace Science and Technology Corporation (CASC) to conduct scientific research on the magnetosphere. Its power system relies on solar cells and batteries. The mission of DOUBLESTAR TC-1 involves carrying the Double Star DSP-E payload to observe the Earth's magnetosphere, contributing to space science studies.