Kosmos 173

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Kosmos 173
Mission type ABM radar target
COSPAR ID 1967-081A
Spacecraft properties
Spacecraft type DS-P1-Yu
Manufacturer Yuzhnoye
Launch mass 325 kilograms (717 lb)
Start of mission
Launch date 24 August 1967, 04:59:49 (1967-08-24UTC04:59:49Z) UTC
Rocket Kosmos-2I 63SM
Launch site Plesetsk 133/1
End of mission
Decay date 17 December 1967 (1967-12-18)
Orbital parameters
Reference system Geocentric
Regime Low Earth
Perigee 261 kilometres (162 mi)
Apogee 471 kilometres (293 mi)
Inclination 71.0 degrees
Period 91.86 minutes

Kosmos 173 (Russian: Космос 173 meaning Cosmos 173), also known as DS-P1-Yu No.8 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 1967 as part of the Dnepropetrovsk Sputnik programme.[1]

A Kosmos-2I 63SM carrier rocket was used to launch Kosmos 173 from Site 133/1 at Plesetsk Cosmodrome.[2] The launch occurred at 04:59:49 UTC on 24 August 1967, and resulted in Kosmos 173's successful deployment into low earth orbit.[3]

Kosmos 173 was operated in an orbit with a perigee of 261 kilometres (162 mi), an apogee of 471 kilometres (293 mi), 71.0 degrees of inclination, and an orbital period of 91.86 minutes.[1][4] It remained in orbit until it decayed and reentered the atmosphere on 17 December 1967.[4] It was the ninth of seventy nine DS-P1-Yu satellites to be launched,[1] and the eighth of seventy two to successfully reach orbit.[5]

See also[edit]


  1. ^ a b c Wade, Mark. "DS-P1-Yu". Encyclopedia Astronautica. Retrieved 9 August 2009. 
  2. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 9 August 2009. 
  3. ^ Wade, Mark. "Kosmos 2". Encyclopedia Astronautica. Retrieved 9 August 2009. 
  4. ^ a b McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 9 August 2009. 
  5. ^ Krebs, Gunter. "DS-P1-Yu (11F618)". Gunter's Space Page. Retrieved 9 August 2009.