Soyuz 20
| COSPAR ID | 1975-106A |
|---|---|
| Mission duration | 90 days, 11 hours, 46 minutes |
| Orbits completed | 1470 |
| Spacecraft properties | |
| Spacecraft type | Soyuz 7K-T/A9 |
| Manufacturer | NPO Energia |
| Launch mass | 6,570 kilograms (14,480 lb) |
| Start of mission | |
| Launch date | November 17, 1975, 14:38:00 UTC |
| Rocket | Soyuz |
| Launch site | Baikonur 1/5 |
| End of mission | |
| Landing date | February 16, 1976, 02:24:00 UTC |
| Landing site | 56 kilometres (35 mi) SW of Arkalyk |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee | 177 kilometres (110 mi) |
| Apogee | 251 kilometres (156 mi) |
| Inclination | 51.6 degrees |
| Period | 89.1 minutes |
| Docking with Salyut 4 | |
|
Soyuz programme
(Manned missions) |
|
Soyuz 20 (Russian: Союз 20, Union 20) was an unmanned spacecraft launched by the Soviet Union. It was a long-duration test of the Soyuz spacecraft that docked with the Salyut 4 space station. Soyuz 20 performed comprehensive checking of improved on-board systems of the spacecraft under various flight conditions. It also carried a biological payload. Living organisms were exposed to three months in space.
It was recovered on February 16, 1976.
None.
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