A Chinese weather satellite—the FY-1C polar orbit satellite of the Fengyun series, at an altitude of 865 kilometers , with a mass of 750 kg —was destroyed by a kinetic kill vehicle traveling with a speed of 8 km/s in the opposite direction [http://blogs.spectrum.ieee.org/tech_talk/2007/01/is_chinas_satellite_killer_a_t.html Is China's Satellite Killer a Threat? (