Resurs-DK No.1

Resurs-DK No.1, also called Resurs-DK1, was a commercial Earth observation satellite able to send high-resolution imagery, down to 0.9 metres, to ground stations as it passed overhead. It was operated by NTs OMZ, the Russian Research Center for Earth Operative Monitoring, and was designed for multi-spectral remote sensing of the Earth's surface, with near real-time visible images and on-line data delivery by radio link. The spacecraft was built by the Russian space company TsSKB-Progress in Samara as a modified version of the military reconnaissance satellite Yantar-4KS1, and it was three-axis stabilized with a design lifetime of at least three years. Its onboard systems and attitude control were terminated in February 2016, and tracking of the satellite ended on 1 March 2016.