| Mission type | Early warning |
|---|---|
| COSPAR ID | 1972-072A |
| SATCAT no. | 06192
 |
| Mission duration | 4 years [1] |
| Spacecraft properties | |
| Spacecraft type | US-K [2] |
| Launch mass | 1,900 kilograms (4,200 lb) [3] |
| Start of mission | |
| Launch date | 19 September 1972, 19:19 UTC |
| Rocket | Molniya-M/ 2BL [2] |
| Launch site | Plesetsk Cosmodrome [2] [3] |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Molniya [2] |
| Perigee altitude | 741 kilometres (460 mi) [4] |
| Apogee altitude | 39,477 kilometres (24,530 mi) [4] |
| Inclination | 62.8 degrees [4] |
| Period | 715.03 minutes [4] |
Kosmos 520 ( Russian: Космос 520 meaning Cosmos 520) was the first Soviet US-K missile early warning satellite. It was launched in 1972 as part of the Oko programme. The satellite is designed to identify missile launches using optical telescopes and infrared sensors. [2]
Kosmos 520 was launched from Site 41/1 at Plesetsk Cosmodrome in the Soviet Union. [2] [5] A Molniya-M carrier rocket with a 2BL upper stage was used to perform the launch, which took place at 19:19 UTC on 19 September 1972. [3] The launch successfully placed the satellite into a molniya orbit. It subsequently received its Kosmos designation, and the international designator 1972-072A. [3] The United States Space Command assigned it the Satellite Catalog Number 06192. [3]
See also
References
- ^ 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 10.1.1.692.6127. doi: 10.1080/08929880212328. ISSN 0892-9882. S2CID 122901563. Archived from the original (PDF) on 2012-03-15.
- ^ a b c d e f "US-K (73D6)". Gunter's Space Page. 2012-03-08. Retrieved 2012-04-21.
- ^ a b c d e "Cosmos 2446". National Space Science Data Centre. 2012-04-20. Retrieved 2012-04-25.
- ^ a b c d McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 30 April 2012.
- ^ McDowell, Jonathan. "R7 Launches". Jonathan's Space Page. Retrieved 30 April 2012.
External links
- Kosmos 520 in the Lavochkin museum - photograph from Novosti Kosmonavtiki, telescopes, infrared telescope, antenna
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