Kosmos 1409
Soviet military early warning satellite
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Kosmos 1409 (Russian: Космос 1409 meaning Cosmos 1409) was a Soviet US-K missile early warning satellite which was launched in 1982 as part of the Soviet military's Oko programme.[4] Kosmos 1409 replaced Kosmos 1217 as part of the Oko constellation of satellites and covered the plane 2 - 317° longitude of ascending node.[5]
| Names | Космос 1409 |
|---|---|
| Mission type | Early warning system |
| Operator | Russian Strategic Nuclear Forces |
| COSPAR ID | 1982-095A |
| SATCAT no. | 13585 |
| Mission duration | 4 years (achieved)[1] |
| Spacecraft properties | |
| Spacecraft type | Oko No. 6008 |
| Bus | US-K |
| Launch mass | 2,400 kg (5,300 lb) |
| Dry mass | 1,250 kg (2,760 lb) |
| Dimensions | 2 m (6 ft 7 in) long and 1.7 m (5 ft 7 in) diameter |
| Start of mission | |
| Launch date | 22 September 1982, 06:23:11 UTC[2] |
| Rocket | Molniya-M / Blok 2BL |
| Launch site | Plesetsk, Site 16/2 |
| Contractor | TsSKB-Progress |
| Entered service | 22 September 1982 |
| End of mission | |
| Deactivated | 5 January 1987[1] |
| Decay date | 8 June 2009 |
| Orbital parameters | |
| Reference system | Geocentric orbit[3] |
| Regime | Molniya orbit |
| Slot | 2 |
| Perigee altitude | 613 km (381 mi) |
| Apogee altitude | 39,340 km (24,440 mi) |
| Inclination | 62.80° |
| Period | 709.00 minutes |
| Instruments | |
| Telescope | |
Kosmos Series | |
Mission
The satellite was designed to identify missile launches using optical telescopes and infrared sensors.[4]
Launch
Kosmos 1409 was launched from Site 16/2 from Plesetsk Cosmodrome in Soviet Union.[2] A Molniya-M launch vehicle with a Blok 2BL upper stage was used to perform the launch, which took place at 06:23:11 UTC on 22 September 1982.[2] The launch successfully placed the satellite into a Molniya orbit. It subsequently received its Kosmos designation, and the COSPAR International Designator 1982-095A.[6] The United States Space Command assigned it the Satellite Catalog Number 13585.[6]
Atmospheric entry
It reentered the Earth's atmosphere on 8 June 2009.[6]
