Kosmos 1658

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Kosmos 1658
Mission type Early warning
COSPAR ID 1985-045A
SATCAT № 15808
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 11 June 1985, 14:27 (1985-06-11UTC14:27Z) UTC
Rocket Molniya-M/2BL[2]
Launch site Plesetsk Cosmodrome[2][3]
End of mission
Deactivated 3 September 1987[1]
Decay date 12 November 2005 (2005-11-13)[4]
Orbital parameters
Reference system Geocentric
Regime Molniya [2]
Perigee 602 kilometres (374 mi)[4]
Apogee 39,754 kilometres (24,702 mi)[4]
Inclination 62.9 degrees[4]
Period 717.82 minutes[4]

Kosmos 1658 (Russian: Космос 1658 meaning Cosmos 1658) was a Soviet US-K missile early warning satellite which was launched in 1985 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 1658 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 14:27 UTC on 11 June 1985.[3] The launch successfully placed the satellite into a molniya orbit. It subsequently received its Kosmos designation, and the international designator 1985-045A.[4] The United States Space Command assigned it the Satellite Catalog Number 15808.[4]

It re-entered the Earth's atmosphere on 12 November 2005.[4]


  1. ^ a b 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 g h McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 30 April 2012. 

See also[edit]