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Kosmos 173
Mission type	ABM radar target
COSPAR ID	1967-081A
SATCAT no.	02921
Mission duration	117 days
Spacecraft properties
Spacecraft type	DS-P1-Yu
Manufacturer	Yuzhnoye
Launch mass	325 kg
Start of mission
Launch date	24 August 1967, 04:59:49 GMT
Rocket	Kosmos-2I 63SM
Launch site	Plesetsk, 133/1
Contractor	Yuzhnoye
End of mission
Decay date	17 December 1967
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee altitude	277 km
Apogee altitude	480 km
Inclination	71.0°
Period	92.3 minutes
Epoch	24 August 1967

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 a 325 kilograms (717 lb) spacecraft,^[1] was built by the Yuzhnoye, and launched in 1967 as part of the Dnepropetrovsk Sputnik programme.^[3]

A Kosmos-2I 63SM carrier rocket was used to launch Kosmos 173 from Site 133/1 at Plesetsk Cosmodrome.^[4] The launch occurred at 04:59:49 GMT on 24 August 1967, and resulted in Kosmos 173's successful deployment into low Earth orbit.^[5]

Kosmos 173 was operated in an orbit with a perigee of 277 kilometres (172 mi), an apogee of 480 kilometres (300 mi), an inclination of 71.0°, and an orbital period of 92.3 minutes.^[2] It remained in orbit until it decayed and reentered the atmosphere on 17 December 1967.^[6] It was the ninth of seventy nine DS-P1-Yu satellites to be launched,^[3] and the eighth of seventy two to successfully reach orbit.^[7]

References

^ ^a ^b "Cosmos 173: Display 1967-081A". nssdc.gsfc.nasa.gov. NASA. 27 February 2020. Retrieved 18 April 2020. This article incorporates text from this source, which is in the public domain.
^ ^a ^b "Cosmos 173:Trajectory 1967-081A". nssdc.gsfc.nasa.gov. NASA. 27 February 2020. Retrieved 18 April 2020. This article incorporates text from this source, which is in the public domain.
^ ^a ^b Wade, Mark. "DS-P1-Yu". Encyclopedia Astronautica. Archived from the original on 2 June 2012. Retrieved 9 August 2009.
^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 9 August 2009.
^ Wade, Mark. "Kosmos 2". Encyclopedia Astronautica. Archived from the original on 18 June 2012. Retrieved 9 August 2009.
^ McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 9 August 2009.
^ Krebs, Gunter. "DS-P1-Yu (11F618)". Gunter's Space Page. Retrieved 9 August 2009.