Kosmos 2155

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Kosmos 2155
Mission type Early warning
Operator VKS
COSPAR ID 1991-064A
SATCAT no. 21702
Mission duration 9 months
Spacecraft properties
Spacecraft type US-KS (74Kh6)[1]
Manufacturer Lavochkin[1]
Launch mass 2,400 kilograms (5,300 lb)[1]
Start of mission
Launch date 13 September 1991, 17:51:00 (1991-09-13UTC17:51Z) UTC[2]
Rocket Proton-K/DM-2
Launch site Baikonur 81/23
End of mission
Deactivated 16 June 1992 [3]
Orbital parameters
Reference system Geocentric
Regime Geostationary
Optical telescope with 50 centimetres (20 in) aperture [1]
Infrared sensor/s [1]
Smaller telescopes[1]

Kosmos 2155 (Russian: Космос 2155 meaning Cosmos 2155) is a Russian US-KS missile early warning satellite which was launched in 1991 as part of the Russian Space Forces' Oko programme. The satellite is designed to identify missile launches using optical telescopes and infrared sensors.[1]

Kosmos 2155 was launched from Site 81/23 at Baikonur Cosmodrome in Kazakhstan.[1] A Proton-K carrier rocket with a DM-2 upper stage was used to perform the launch, which took place at 17:51 UTC on 13 September 1991.[2][3] The launch successfully placed the satellite into geostationary orbit. It subsequently received its Kosmos designation, and the international designator 1991-064A.[2] The United States Space Command assigned it the Satellite Catalog Number 21702.[2][3]

It was operational for about 9 months.[3]

See also[edit]


  1. ^ a b c d e f g h "US-KS (74Kh6)". Gunter's Space Page. 2012-03-30. Retrieved 2012-04-19. 
  2. ^ a b c d "Cosmos 2155". National Space Science Data Centre. 2012-04-10. Retrieved 2012-04-19. 
  3. ^ a b c d Podvig, Pavel (2002). "History and the Current Status of the Russian Early-Warning System" (PDF). Science and Global Security. 10: 21–60. ISSN 0892-9882. doi:10.1080/08929880212328. Archived from the original (pdf) on 2012-03-15.