Kosmos 2084

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Kosmos 2084
Mission type Early warning
COSPAR ID 1990-055A
SATCAT № 20663
Mission duration 4 years [1]
Spacecraft properties
Spacecraft type US-K [2]
Launch mass 1,900 kilograms (4,200 lb)[3]
Start of mission
Launch date 21 June 1990, 20:45 (1990-06-21UTC20:45Z) UTC
Rocket Molniya-M/2BL[2]
Launch site Plesetsk Cosmodrome[2][3]
Orbital parameters
Reference system Geocentric
Regime Low Earth Orbit
Perigee 582 kilometres (362 mi)[4]
Apogee 759 kilometres (472 mi)[4]
Inclination 62.8 degrees[4]
Period 98.15 minutes[4]

Kosmos 2084 (Russian: Космос 2084 meaning Cosmos 2084) is a Russian US-K missile early warning satellite which was launched in 1990 as part of the Russian Space Forces' Oko programme. The satellite was designed to identify missile launches using optical telescopes and infrared sensors.[2]

Kosmos 2084 was launched from Site 43/3 at Plesetsk Cosmodrome in Russia.[5] A Molniya-M carrier rocket with a 2BL upper stage was used to perform the launch, which took place at 20:45 UTC on 21 June 1990.[3] The launch failed to place the satellite into a molniya orbit as the Blok 2BL failed to ignite leaving the satellite in low Earth orbit.

It subsequently received its Kosmos designation, and the international designator 1990-055A.[3] The United States Space Command assigned it the Satellite Catalog Number 20663.[3]


  1. ^ 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 "US-K (73D6)". Gunter's Space Page. 2012-03-08. Retrieved 2012-04-21. 
  3. ^ a b c d e "Cosmos 2084". National Space Science Data Centre. 2012-04-20. Retrieved 2012-04-25. 
  4. ^ a b c d McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 30 April 2012. 
  5. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 2 May 2012. 

See also[edit]