Kosmos 2084
Mission typeEarly warning
COSPAR ID1990-055A Edit this at Wikidata
SATCAT no.20663
Mission duration4 years [1]
Spacecraft properties
Spacecraft typeUS-K[2]
Launch mass1,900 kilograms (4,200 lb)[3]
Start of mission
Launch date21 June 1990, 20:45 (1990-06-21UTC20:45Z) UTC
Launch sitePlesetsk Cosmodrome[2][3]
Orbital parameters
Reference systemGeocentric
RegimeLow Earth Orbit
Perigee altitude582 kilometres (362 mi)[4]
Apogee altitude759 kilometres (472 mi)[4]
Inclination62.8 degrees[4]
Period98.15 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]

See also


  1. ^ Podvig, Pavel (2002). "History and the Current Status of the Russian Early-Warning System" (PDF). Science and Global Security. 10 (1): 21–60. Bibcode:2002S&GS...10...21P. CiteSeerX doi:10.1080/08929880212328. ISSN 0892-9882. S2CID 122901563. Archived from the original (PDF) on 2012-03-15.
  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.