COSMOS 1172 (also known as Kosmos-1172) is an Oko-class satellite launched on April 12, 1980, from the Plesetsk launch site in Russia using a Molniya 8K78M launch vehicle. The spacecraft measures 4 meters in length with a diameter of 2 meters and has a span of 5 meters. It had a launch mass of 1250 kg and a dry mass of 1150 kg. The satellite was manufactured by NPOL/KOMET for the PVO (Russian Air Defense Forces) and carries an Oko 5V95 payload designated No. 6001/3008. COSMOS 1172 has a radar cross-section of 17.2131 m² and features a cylindrical shape with two panels attached, but its purpose is not specified in the provided data.