Kosmos 351


Kosmos 351
Mission typeABM radar target
COSPAR ID1970-051A
SATCAT no.04427Edit this on Wikidata
Spacecraft properties
Spacecraft typeDS-P1-Yu
Launch mass325 kilograms (717 lb)
Start of mission
Launch date27 June 1970, 07:39:55 (1970-06-27UTC07:39:55Z) UTC
RocketKosmos-2I 63SM
Launch sitePlesetsk 133/1
End of mission
Decay date13 October 1970 (1970-10-14)
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Perigee altitude261 kilometres (162 mi)
Apogee altitude429 kilometres (267 mi)
Inclination70.9 degrees
Period91.43 minutes

Kosmos 351 (Russian: Космос 351 meaning Cosmos 351), known before launch as DS-P1-Yu No.38, was a Soviet satellite which was launched in 1970 as part of the Dnepropetrovsk Sputnik programme. It was a 325-kilogram (717 lb) spacecraft, which was built by the Yuzhnoye Design Bureau, and was used as a radar calibration target for anti-ballistic missile tests.[1]


Kosmos 351 was launched from Site 133/1 at the Plesetsk Cosmodrome,[2] atop a Kosmos-2I 63SM carrier rocket. The launch occurred on 27 June 1970 at 07:39:55 UTC, and resulted in the successful deployment of Kosmos 351 into low Earth orbit.[3] Upon reaching orbit, it was assigned its Kosmos designation, and received the International Designator 1970-051A.[4]


Kosmos 351 was the thirty-fourth of seventy nine DS-P1-Yu satellites to be launched,[1] and the thirty-first of seventy two to successfully reach orbit.[5] It was operated in an orbit with a perigee of 261 kilometres (162 mi), an apogee of 429 kilometres (267 mi), 70.9 degrees of inclination, and an orbital period of 91.43 minutes.[1][6] It remained in orbit until it decayed and reentered the atmosphere on 13 October 1970.[6]


  1. ^ a b c Wade, Mark. "DS-P1-Yu". Encyclopedia Astronautica. Archived from the original on 18 May 2012. Retrieved 15 August 2009.
  2. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 15 August 2009.
  3. ^ Wade, Mark. "Kosmos 2". Encyclopedia Astronautica. Archived from the original on 8 July 2012. Retrieved 15 August 2009.
  4. ^ "Cosmos 351". NSSDC Master Catalog. US National Space Science Data Center. Retrieved 15 August 2009.
  5. ^ Krebs, Gunter. "DS-P1-Yu (11F618)". Gunter's Space Page. Retrieved 15 August 2009.
  6. ^ a b McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 15 August 2009.