Earth Observation Satellite

Pion-NKS 901 (Cosmos 2550) satellites are the maritime component of the new-generation ELINT satellite system Liana.

Name of SatellitePion-NKS 901 (Cosmos 2550)
PurposeEarth Observation
ContractorKB Arsenal, RKTs Progress
Country of ContractorRussia
Launch Mass (kg.)6 500
Class of OrbitLEO
Perigee (km)587
Expected Lifetime (yrs.)5
Date of Launch25.06.2021
Launch SitePlesetsk Cosmodrome
Launch VehicleSoyuz 2.1b
COSPAR Number2021-056A
NORAD Number48865

In Pion-NKS 901 Earth Observation Satellite both ELINT US-PM passive radar and US-A active radar were equipped with ELINT sensors and active radar as a replacement.


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