Kosmos 455

Mission type	ABM radar target
COSPAR ID	1971-097A
SATCAT no.	05608
Spacecraft properties
Spacecraft type	DS-P1-Yu
Manufacturer	Yuzhnoye
Launch mass	325 kilograms (717 lb)
Start of mission
Launch date	17 November 1971, 11:09:48 (1971-11-17UTC11:09:48Z) UTC
Rocket	Kosmos-2I 63SM
Launch site	Plesetsk 133/1
End of mission
Decay date	9 April 1972 (1972-04-10)
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee altitude	266 kilometres (165 mi)
Apogee altitude	468 kilometres (291 mi)
Inclination	70.9 degrees
Period	91.9 minutes

Kosmos 455 (Russian: Космос 455 meaning Cosmos 455), known before launch as DS-P1-Yu No.54, was a Soviet satellite which was launched in 1971 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 455 was successfully launched into low Earth orbit on 17 November 1971, with the rocket lifting off at 11:09:48 UTC.^[2] The launch took place from Site 133/1 at the Plesetsk Cosmodrome,^[3] and used a Kosmos-2I 63SM carrier rocket.

Upon reaching the orbit, it was assigned its Kosmos designation, and received the International Designator 1971-097A.^[4]

Kosmos 455 was the forty-seventh of seventy nine DS-P1-Yu satellites to be launched,^[1] and the forty-second of seventy two to successfully reach orbit.^[5] It was operated in an orbit with a perigee of 266 kilometres (165 mi), an apogee of 468 kilometres (291 mi), 70.9 degrees of inclination, and an orbital period of 91.9 minutes.^[1][6] It remained in orbit until it decayed and re-entered the atmosphere on 9 April, 1972.^[6]

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