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Cosmos 557



Cosmos 557 was believed to be an unmanned Soyuz-type vehicle. It may have been launched in an attempt to salvage part of the Salyut 2 mission, to serve as a substitute for the Salyut vehicle. It transmitted on a frequency of 922.75 mh, the same as used by Salyut spacecraft.

Alternate Names

  • 06498
  • Cosmos557

Facts in Brief

Launch Date: 1973-05-11
Launch Vehicle: Proton
Launch Site: Tyuratam (Baikonur Cosmodrome), U.S.S.R
Mass: 19400 kg

Funding Agency

  • Unknown (U.S.S.R)


  • Surveillance and Other Military

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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