| Mission type | Early warning |
|---|---|
| COSPAR ID | 1980-028A |
| SATCATno. | 11758 |
| Mission duration | 4 years[1] |
| Spacecraft properties | |
| Spacecraft type | US-K[2] |
| Launch mass | 1,900 kilograms (4,200 lb) |
| Start of mission | |
| Launch date | 12 April 1980, 20:18 (1980-04-12UTC20:18Z) UTC |
| Rocket | Molniya-M/2BL[2] |
| Launch site | Plesetsk Cosmodrome[2][3] |
| End of mission | |
| Deactivated | 9 April 1982[1] |
| Decay date | 26 December 1997 (1997-12-27)[4] |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Molniya[2] |
| Perigee altitude | 646 kilometres (401 mi)[4] |
| Apogee altitude | 39,698 kilometres (24,667 mi)[4] |
| Inclination | 62.8 degrees[4] |
| Period | 717.56 minutes[4] |
Kosmos 1172 (Russian:Космос 1172 meaningCosmos 1172) was a SovietUS-K missileearly warning satellite which was launched in 1980 as part of the Soviet military'sOko programme. The satellite was designed to identify missile launches usingoptical telescopes andinfrared sensors.[2]
Kosmos 1172 was launched fromSite 41/1 atPlesetsk Cosmodrome in the Russian SSR.[3] AMolniya-M carrier rocket with a2BL upper stage was used to perform the launch, which took place at 20:18 UTC on 12 April 1980.[3] The launch successfully placed the satellite into amolniya orbit. It subsequently received itsKosmos designation, and theinternational designator 1980-028A.[4] TheUnited States Space Command assigned it theSatellite Catalog Number 11758.[4]
It re-entered the Earth's atmosphere on 26 December 1997.[4]
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