Soyuz 20
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.[2]
| COSPAR ID | 1975-106A |
|---|---|
| SATCAT no. | 08430 |
| Mission duration | 90 days, 11 hours, 52 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, 14:36:37 UTC |
| Rocket | Soyuz-U |
| Launch site | Baikonur 1/5[1] |
| End of mission | |
| Landing date | February 16, 1976, 02:29 UTC |
| Landing site | 56 kilometres (35 mi) SW of Arkalyk |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee altitude | 177 kilometres (110 mi) |
| Apogee altitude | 251 kilometres (156 mi) |
| Inclination | 51.6 degrees |
| Period | 89.1 minutes |
| Docking with Salyut 4 | |
Soyuz programme (Manned missions) | |
It was reentered on 16 February 1976.
Crew
None.
Mission parameters
- Mass: 6,570 kg (14,480 lb)
- Perigee: 177 km (110 mi)
- Apogee: 251 km (156 mi)
- Inclination: 51.6°
- Period: 89.1 minutes
References
- "Baikonur LC1". Encyclopedia Astronautica. Archived from the original on 2009-04-15. Retrieved 2009-03-04.
- LA Times, UNMANNED SOYUZ AND SALYUT DOCK, By Christopher S. Wren Special to The New York Times, Nov. 20, 1975
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Uncrewed missions are designated as Kosmos instead of Soyuz; exceptions are noted "(uncrewed)". The † sign designates failed missions. Italics designates cancelled missions. | |||||||||||||||||||||||||||
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