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South Korea Completes Military Spy-Satellite Constellation With Successful Fifth Launch

The finished five-satellite network gives Seoul independent, all‑weather coverage with roughly two‑hour revisit across the peninsula.

Overview

  • The fifth synthetic aperture radar spacecraft lifted off on a SpaceX Falcon 9 from Cape Canaveral at 1:09 a.m. U.S. time, reached orbit about 14 minutes later, and made stable contact with a ground station roughly an hour after launch.
  • The mission completes the decade-long 425 Project, which fields four radar satellites and one electro‑optical/infrared satellite for complementary sensing.
  • Satellites 1–3 are fully integrated, No. 4 remains under operational evaluation, and the newly launched unit will undergo testing before entering full service.
  • Defense officials report the SAR payloads can resolve objects near 30 centimeters, enabling detailed observation regardless of weather or lighting conditions.
  • The constellation bolsters the military’s Kill Chain posture and reduces reliance on U.S. imagery, with plans for additional small satellites and domestic launch infrastructure.