3 June 1969, 12:57:27 (1969-06-03UTC12:57:27Z) UTC
Rocket
Kosmos-2I 63SM
Launch site
Plesetsk 133/1
End of mission
Decay date
7 October 1969 (1969-10-08)
Orbital parameters
Reference system
Geocentric
Regime
Low Earth
Perigee altitude
257 kilometres (160 mi)
Apogee altitude
452 kilometres (281 mi)
Inclination
71 degrees
Period
91.6 minutes
Kosmos 285 (Russian: Космос 285 meaning Cosmos 285), known before launch as DS-P1-Yu No.24,[1] was a Soviet satellite which was used as a radar calibration target for tests of anti-ballistic missiles. It was a 250-kilogram (550 lb) spacecraft, which was built by the Yuzhnoye Design Bureau, and launched in 1969 as part of the Dnepropetrovsk Sputnik programme.[2]
Kosmos 285 was launched from Site 133/1 at the Plesetsk Cosmodrome,[1] atop a Kosmos-2I 63SM carrier rocket. The launch occurred on 3 June 1969 at 12:57:27 UTC, and resulted in Kosmos 285's successful deployment into low Earth orbit.[3] Upon reaching orbit, it was assigned its Kosmos designation, and received the International Designator 1969-049A.
Kosmos 285 was operated in an orbit with a perigee of 257 kilometres (160 mi), an apogee of 452 kilometres (281 mi), 71 degrees of inclination, and an orbital period of 91.6 minutes.[2][4] It remained in orbit until it decayed and reentered the atmosphere on 7 October 1969.[4] It was the twenty-second of seventy nine DS-P1-Yu satellites to be launched,[2] and the twenty-first of seventy two to successfully reach orbit.[5]
^ abMcDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 14 August 2009.
^ abcWade, Mark. "DS-P1-Yu". Encyclopedia Astronautica. Archived from the original on 2 June 2012. Retrieved 14 August 2009.
^Wade, Mark. "Kosmos 2". Encyclopedia Astronautica. Archived from the original on 18 June 2012. Retrieved 14 August 2009.
^ abMcDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 14 August 2009.
^Krebs, Gunter. "DS-P1-Yu (11F618)". Gunter's Space Page. Retrieved 14 August 2009.
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