Kosmos 1409

Kosmos 1409

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 ← Kosmos 1408 Kosmos 1410 →

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]

The satellite was designed to identify missile launches using optical telescopes and infrared sensors.^[4]

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]

It reentered the Earth's atmosphere on 8 June 2009.^[6]

• List of Kosmos satellites (1251–1500)
• List of R-7 launches (1980-1984)
• 1982 in spaceflight
• List of Oko satellites