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Cosmos 2525



Very little has been made public about this payload – even for a military satellite – other than unofficial reports that it was based around a new satellite bus developed by VNIIEM Corporation of Moscow.

The Eksperimentalny Maly Kosmichesky Apparat (EMKA) – or Experimental Small Spacecraft – is a platform developed by VNIIEM to support future miniature reconnaissance satellites.

The name Kosmos 2525 is a sequential designation under a system that is used for most of Russia’s military spacecraft. The Soviet Union began using numbered designations beginning with Kosmos – meaning “Space” or “Cosmos” – in 1962. Initially the name was used for any spacecraft in orbit that the Soviet Union did not want to identify publicly – including prototypes, satellites and planetary probes which had failed to reach their intended destinations and some scientific missions as well as military applications.

Alternate Names

  • 43243
  • Cosmos2525

Facts in Brief

Launch Date: 2018-03-29
Launch Vehicle: Soyuz-2.1v
Launch Site: Plesetsk, Russia

Funding Agency

  • Unknown (Russia)


  • 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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