cosmos.wikisort.org - Spacecraft

Kosmos 775 (Russian: Космос 775 meaning Cosmos 775) is a Soviet US-KS missile early warning satellite which was launched in 1975 as part of the Oko programme. The satellite is designed to identify missile launches using optical telescopes and infrared sensors.[1]

Kosmos 775

Mission type	Early warning
Operator	VKS
COSPAR ID	1975-097A
SATCAT no.	8357
Mission duration	failed
Spacecraft properties
Spacecraft type	US-KS (74Kh6)[1]
Manufacturer	Lavochkin[1]
Launch mass	2,400 kilograms (5,300 lb)[1]
Start of mission
Launch date	8 October 1975, 00:30:00 (1975-10-08UTC00:30Z) UTC[2]
Rocket	Proton-K/DM
Launch site	Baikonur 81/23
Orbital parameters
Reference system	Geocentric
Regime	Geostationary
Instruments
Optical telescope with 50 centimetres (20 in) aperture [1] Infrared sensor/s [1] Smaller telescopes[1]

Kosmos 775 was launched from Site 81/23 at Baikonur Cosmodrome in the Kazakh SSR.[1] A Proton-K carrier rocket with a DM upper stage was used to perform the launch, which took place at 00:30 UTC on 8 October 1975.[2][3] The launch attempted to place the satellite into geostationary orbit. It subsequently received its Kosmos designation, and the international designator 1975-097A.[2] The United States Space Command assigned it the Satellite Catalog Number 8357.[2][3]

It was the first US-KS satellite and was never operational. Podvig says its orbit was never stabilised,[3] NASA's National Space Science Data Centre says it exploded.[2] The next launch of one of these craft was Kosmos 1546 in 1984.

See also

• List of Kosmos satellites (751–1000)

References

---