2.2.0 spase://SMWG/Observatory/DoubleStar2 Double Star 2 2004-029A Explorer 2 Tan Ce 2 TC 2 2019-05-05T12:34:56Z Double Star 2, also known as Explorer 2 and as Tan Ce 2 (TC 2) , is a European-Chinese (PRC) (ESA-CNSA) satellite that was launched by a Long March 2C rocket from Taiyuan Satellite Launching Center at 07:05 UT on 25 July 2004. 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.) This joint mission is similar to the equatorial orbiter, Double Star 1, except that Double Star 2 is a polar orbiter. spase://SMWG/Person/Christophe.Philippe.Escoubet ProjectScientist NSSDC's Master Catalog https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=2004-029A Information about the Double Star 2 mission Double Star Mission Overview http://www.esa.int/Our_Activities/Space_Science/Double_Star_overview2 Detailed information about the Double Star Mission. Double Star Mission European Space Agency Homepage http://sci.esa.int/double-star/ Detailed information about the Double Star Mission. Double Star Mission Annales Geophysicae Article https://www.ann-geophys.net/23/2707/2005/ Detailed information about the Double Star Mission. spase://SMWG/Observatory/DoubleStar Earth.Magnetosphere.Main