Kosmos 265

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Kosmos 265
Mission typeABM radar target
COSPAR ID1969-012A
SATCAT no.03675Edit this on Wikidata
Spacecraft properties
Spacecraft typeDS-P1-Yu
Launch mass325 kg (717 lb)
Start of mission
Launch date7 February 1969, 13:59 (1969-02-07UTC13:59Z) UTC
RocketKosmos-2I 63SM
Launch sitePlesetsk 133/1
End of mission
Decay date1 May 1969 (1969-06)
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Perigee261 km (162 mi)
Apogee413 km (257 mi)
Inclination70.9 degrees
Period91.3 minutes

Kosmos 265 (Russian: Космос 265 meaning Cosmos 265), known before launch as DS-P1-Yu No.21, was a Soviet satellite which was used as a radar calibration target for tests of anti-ballistic missiles. It was built by the Yuzhnoye Design Bureau, and launched in 1969 as part of the Dnepropetrovsk Sputnik programme.[1] It had a mass of 325 kg (717 lb).[1]

Kosmos 265 was launched from Plesetsk Cosmodrome Site 133/1,[2] atop a Kosmos-2I 63SM carrier rocket. The launch occurred on 7 February 1969 at 13:59 UTC, and resulted in Kosmos 265's successful deployment into low Earth orbit.[3] Upon reaching orbit, it was assigned its Kosmos designation, and received the International Designator 1969-012A.

Kosmos 265 was operated in an orbit with a perigee of 261 kilometres (162 mi), an apogee of 413 kilometres (257 mi), 70.9 degrees of inclination, and an orbital period of 91.3 minutes.[1][4] It remained in orbit until it decayed and reentered the atmosphere on 1 May 1969.[4] It was the eighteenth of seventy nine DS-P1-Yu satellites to be launched,[1] and the seventeenth of seventy two to successfully reach orbit.[5]

See also[edit]


  1. ^ a b c d Wade, Mark. "DS-P1-Yu". Encyclopedia Astronautica. Archived from the original on 18 May 2012. Retrieved 13 August 2009.
  2. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 13 August 2009.
  3. ^ Wade, Mark. "Kosmos 2". Encyclopedia Astronautica. Archived from the original on 8 July 2012. Retrieved 13 August 2009.
  4. ^ a b McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 13 August 2009.
  5. ^ Krebs, Gunter. "DS-P1-Yu (11F618)". Gunter's Space Page. Retrieved 13 August 2009.