D
SpaceRussia

Pion-NKS (Liana)

Naval ELINT and radar satelliteIn servicePending verification

Also known as: 14F139

SpaceRUS
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Fact cardConfidence · Source
System
TypeNaval ELINT and radar satellite
Alternative designations14F139
ProliferationOrigin country only
Satellites1Kosmos 2550, June 2021; likely only one radar antenna deployedMed[1]
First launch2021Med[1]
Orbit
Orbit regimeLEOMed[1]
Summary

Naval component of Liana carrying ELINT sensors and an active radar, replacing US-PM and US-A.

Draft entry. Values come from the cited public sources and are awaiting editor verification.
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Operators
Russia
Sources
  1. Pion-NKS (14F139), Gunter's Space Page
    Tier 3 · checked 2026-11-08
Change log
  • 2026-11-08 Entry created from cited open sources