Kosmos 1109

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Kosmos 1109
Mission type Early warning
COSPAR ID 1979-058A
SATCAT № 11417
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 27 June 1979, 18:11 (1979-06-27UTC18:11Z) UTC
Rocket Molniya-M/2BL[2]
Launch site Plesetsk Cosmodrome[2][3]
End of mission
Deactivated 15 February 1980[1]
Orbital parameters
Reference system Geocentric
Regime Molniya [2]
Perigee 665 kilometres (413 mi)[4]
Apogee 39,675 kilometres (24,653 mi)[4]
Inclination 62.9 degrees[4]
Period 717.48 minutes[4]

Kosmos 1109 (Russian: Космос 1109 meaning Cosmos 1109) was a Soviet US-K missile early warning satellite which was launched in 1979 as part of the Soviet military's Oko programme. The satellite was designed to identify missile launches using optical telescopes and infrared sensors.[2]

Kosmos 1109 was launched from Site 41/1 at Plesetsk Cosmodrome in the Russian SSR.[3] A Molniya-M carrier rocket with a 2BL upper stage was used to perform the launch, which took place at 18:11 UTC on 27 June 1979.[3] The launch successfully placed the satellite into a molniya orbit. It subsequently received its Kosmos designation, and the international designator 1979-058A.[4] The United States Space Command assigned it the Satellite Catalog Number 11417.[4]

Podvig says that it self-destructed and that its orbit was never stabilised.[1]

See also[edit]


  1. ^ a b c Podvig, Pavel (2002). "History and the Current Status of the Russian Early-Warning System" (PDF). Science and Global Security 10: 21–60. doi:10.1080/08929880212328. ISSN 0892-9882. 
  2. ^ a b c d e "US-K (73D6)". Gunter's Space Page. 2012-03-08. Retrieved 2012-04-21. 
  3. ^ a b c McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 2 May 2012. 
  4. ^ a b c d e f McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 30 April 2012.