Kosmos 2155
Mission typeEarly warning
COSPAR ID1991-064A
SATCAT no.21702
Mission duration9 months
Spacecraft properties
Spacecraft typeUS-KS (74Kh6)[1]
Launch mass2,400 kilograms (5,300 lb)[1]
Start of mission
Launch date13 September 1991, 17:51:00 (1991-09-13UTC17:51Z) UTC[2]
Launch siteBaikonur 81/23
End of mission
Deactivated16 June 1992 [3]
Orbital parameters
Reference systemGeocentric
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


  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. CiteSeerX doi:10.1080/08929880212328. ISSN 0892-9882. Archived from the original (PDF) on 2012-03-15.