| 词条 | Kosmos 520 |
| 释义 |
| name = Kosmos 520 | mission_type = Early warning | operator = | COSPAR_ID = 1972-072A | SATCAT = | mission_duration = 4 years [1] | spacecraft_type = US-K [2] | manufacturer = | launch_mass = {{convert|1900|kg}}[3] | launch_date = {{start-date|19 September 1972, 19:19|timezone=yes}} UTC | launch_rocket = Molniya-M/2BL[2] | launch_site = Plesetsk Cosmodrome[2][3] | launch_contractor = | entered_service = | disposal_type = | deactivated = | decay_date = | orbit_epoch = | orbit_reference = Geocentric | orbit_regime = Molniya [2] | orbit_periapsis = {{convert|741|km}}[8] | orbit_apoapsis = {{convert|39477|km}}[8] | orbit_inclination = 62.8 degrees[8] | orbit_period = 715.03 minutes[8] | orbit_slot = | apsis = gee }}Kosmos 520 ({{lang-ru|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][14] 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{{Portal|Spaceflight}}
ReferencesExternal links
5 : Kosmos satellites|1972 in spaceflight|Oko|Spacecraft launched by Molniya-M rockets|Spacecraft launched in 1972 |
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