Used the KAUR-1 bus, which consisted of a 2.035 m diameter cylindrical spacecraft body, with solar cells and radiators of the thermostatic temperature regulating system mounted on the exterior. The hermetically sealed compartment had the equipment mounted in cruciform bays, with the chemical batteries protecting the radio and guidance equipment mounted at the centre.Unlike other spacecraft using this bus, The spacecraft was used on suborbital 'altitude sounder' missions and was equipped with an active orientation system.

Total Length: 3.0 m. Maximum Diameter: 2.0 m. Total Mass: 1,000 kg.

• 449 - Golotyuk, S, Novosti kosmonavtiki, "Sputnikostroiteli s beregov Yeniseya", No. 10, 1999, p. 64.