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Cargo spacecraft "Progress-21"


BRIEFLY ABOUT CARGO
Registration number 1984-042A / 14961
Time and date of launch (UTC) 22h.47m.    May 07, 1984
Launch site Baikonur, LC 31?
Launch vehicle Soyuz U
Mass (kg) 7020
Orbital parameters:
   - inclination (degrees) 51.6
   - period (minutes) 88.8
   - perigee (km) 187
   - apogee (km) 246
Time and date of entry ignition (UTC) 14h.17m.    May 26, 1984
Duration 18d.15h.
Distance (km)
Number of revolutions around Earth 298
Summary Delivery of cargo to the orbital station "Salyut-7"  



TIMELINE
Date Time (UTC) Spaceship's revo-
lution number
Station's revo-
lution number
Explanation
May 07, 1984 22:47:15 1 Salyut-7:11862 Lift-off cargo "Progress-21" .
May 10, 1984 00:10 34 Salyut-7:11895 Docking of "Progress-21"   to aft (aggregative) unit of orbital complex "Salyut-7"   - "Soyuz-T11" .
May 18, 1984 17:52
Salyut-7:12034 Beginning of the 5th [of 6] PE-3 EVA ( Kizim,   Solovyov ); station "Salyut-7" .
May 18, 1984 20:57
Salyut-7:12036 Ending of EVA ( Kizim,   Solovyov ), duration 3:05; station "Salyut-7" .
May 26, 1984 09:41 295 Salyut-7:12156 Undocking of "Progress-21"   from aft (aggregative) unit of orbital complex "Salyut-7"   - "Soyuz-T11" .
May 26, 1984 14:17 299 Salyut-7:12159 Deorbit burn of "Progress-21" .
May 26, 1984 15:05? 299 Salyut-7:12160 End of existence of "Progress-21" .

Sources:
  Mission Control Center (TsUP) from 2007
  Alexander Zheleznyakov
  Spaceflight now
  journal "Novosti Kosmonavtiki" ("News of Cosmonautics") from 1993 till our time
  journal "Kosmonavtika, astronomiya" ("Cosmonautics, astronomy") 1983-1991 years
  book "Evolution of vehicle-creating and cosmonautics in the USSR" by Valentin P. Glushko, Moscow, 1987
  Jonathan's Space Report
  and many other people and editions
  


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