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Kosmos 285
Mission type	ABM radar target
COSPAR ID	1969-049A
SATCAT no.	03983
Spacecraft properties
Spacecraft type	DS-P1-Yu
Manufacturer	Yuzhnoye
Launch mass	250 kilograms (550 lb)
Start of mission
Launch date	3 June 1969, 12:57:27 UTC
Rocket	Kosmos-2I 63SM
Launch site	Plesetsk 133/1
End of mission
Decay date	7 October 1969
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]

References

^ ^a ^b McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 14 August 2009.
^ ^a ^b ^c Wade, 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.
^ ^a ^b McDowell, 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.