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Cargo spacecraft "Progress-12"


BRIEFLY ABOUT CARGO
Registration number 1981-007A / 12152
Time and date of launch (UTC) 14h.18m.    January 24, 1981
Launch site Baikonur, LC 1
Launch vehicle Soyuz U
Mass (kg) 7020
Orbital parameters:
   - inclination (degrees) 51.7
   - period (minutes) 90.0
   - perigee (km) 247
   - apogee (km) 308
Time and date of entry ignition (UTC) 16h.59m.    March 20, 1981
Duration 55d.02h.
Distance (km)
Number of revolutions around Earth 869
Summary Delivery of cargo to the orbital station "Salyut-6"  



TIMELINE
Date Time (UTC) Spaceship's revo-
lution number
Station's revo-
lution number
Explanation
Jan 24, 1981 14:18:02 1 Salyut-6:19136 Lift-off cargo "Progress-12" .
Jan 26, 1981 15:56 34 Salyut-6:19169 Docking of "Progress-12"   to aft (aggregative) unit of station "Salyut-6" .
Mar 12, 1981 19:00:11 1 Salyut-6:19880 Lift-off spacecraft "Soyuz-T4"   (crew: Kovalyonok,   Savinykh ).
Mar 13, 1981 20:33:40 18 Salyut-6:19897 Docking of spacecraft "Soyuz-T4"   (crew: Kovalyonok,   Savinykh ) to fore (transitional) unit of orbital complex "Salyut-6"   - "Progress-12" .
Mar 19, 1981 18:14 855 Salyut-6:19990 Undocking of "Progress-12"   from aft (aggregative) unit of orbital complex "Salyut-6"   - "Soyuz-T4" .
Mar 20, 1981 16:59 870 Salyut-6:20005 Deorbit burn of "Progress-12" .
Mar 20, 1981 17:45? 870 Salyut-6:20005 End of existence of "Progress-12" .

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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