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DS-U1-R was a Soviet satellite which was launched in 1970 as part of the Dnepropetrovsk Sputnik programme. It was a 295 kg spacecraft, which was built by the Yuzhnoye Design Bureau, and was used to study spectral ranges in the Earth's atmosphere.

A Kosmos-2 carrier rocket was used to launch the satellite into low Earth orbit from Kapustin Yar. Upon reaching orbit, the satellite was assigned the Kosmos 335 designation.

It completed operations on 20 June 1970. On 22 June 1970, it decayed from orbit and reentered the atmosphere.

Nation: USSR
Type / Application: Atmospheric research
Contractors: Yuzhnoye
Configuration: DS Bus
Power: Batteries
Lifetime: 3 months
Mass: 295 kg
Orbit: 247 km × 391 km, 48.4
Satellite COSPAR Date LS Launch Vehicle Remarks
Kosmos 335 (DS-U1-R #1) 1970-035A 24.04.1970 KY LC-86/4 Kosmos-2


  • Yuzhnoye: Small unified spacecraft
  • КБ "Южное": Название: Ракеты и космические аппараты Конструкторского бюро "Южное"

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