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Progress 20
Progress drawing.svg
A Progress 7K-TG spacecraft
Mission typeSalyut 7 resupply
COSPAR ID1984-038A
SATCAT no.14932[1]
Spacecraft properties
SpacecraftProgress (No.121)
Spacecraft typeProgress 7K-TG[2]
ManufacturerNPO Energia
Start of mission
Launch date15 April 1984, 08:12:53 UTC[1]
Launch siteBaikonur, Site 31/6
End of mission
Decay date7 May 1984, 00:32:51 UTC[3]
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Perigee altitude186 km[3]
Apogee altitude260 km[3]
Period89.0 minutes[3]
Epoch15 April 1984
Docking with Salyut 7
Docking portAft[3]
Docking date17 April 1984, 09:22 UTC
Undocking date6 May 1984, 17:46 UTC

Progress 20 (Russian: Прогресс 20) was a Soviet uncrewed Progress cargo spacecraft, which was launched in April 1984 to resupply the Salyut 7 space station.


Progress 20 launched on 15 April 1984 from the Baikonur Cosmodrome in the Kazakh SSR. It used a Soyuz-U2 rocket.[2][4]


Progress 20 docked with the aft port of Salyut 7 on 17 April 1984 at 09:22 UTC, and was undocked on 6 May 1984 at 17:46 UTC.[3][5]


It remained in orbit until 7 May 1984, when it was deorbited. The deorbit burn occurred at 00:32:51 UTC, with the mission ending at around 01:15 UTC.[3][5]

See also


  1. ^ a b "Launchlog". Jonathan's Space Report. Retrieved 5 December 2020.
  2. ^ a b c "Progress 1 - 42 (11F615A15, 7K-TG)". Gunter's Space Page. Retrieved 5 December 2020.
  3. ^ a b c d e f g h "Cargo spacecraft "Progress 20"". Manned Astronautics figures and facts. Archived from the original on 13 October 2007.
  4. ^ "Progress 20". NASA. Retrieved 5 December 2020. This article incorporates text from this source, which is in the public domain.
  5. ^ a b "Salyut 7". Astronautix. Retrieved 5 December 2020.
This page was last edited on 2 January 2021, at 02:54
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