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425 project
Photo: Unknown authorUnknown author or not provided · Wikimedia Commons · Public domain
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425project

Optical / Imaging Satellites · South Korea · 2023
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425project

425 project
425 project Photo: Unknown authorUnknown author or not provided · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Resolution
85
Coverage
75
Revisit Rate
70
Image Quality
80
Tasking Agility
65
Data Throughput
70
Longevity
60
Survivability
50
Technology
85
Strategic Value
90
Origin South Korea
CategoryOptical / Imaging Satellites
EraModern Era
In service2023
Operators1 countries
Quantity5
Data Quality81%
76
Optical / Imaging Satellites MASS Rating
2/3
Modern Era
5/26
All-Time
Optical / Imaging Satellites · 10 axes scored
Resolution
85
Coverage
75
Revisit Rate
70
Image Quality
80
Tasking Agility
65
Data Throughput
70
Longevity
60
Survivability
50
Technology
85
Strategic Value
90
ⓘ Regardless of era, the same scoring system applies to all units in the optical / imaging satellites category.
01 / Overview
425 project
Production
2023–
Quantity
5
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
OPTICAL / IMAGING SATELLITES · MODERN ERA
2
PERFORMANCE/PRICE
87
UNIT COST (2025 USD)
—
76
optical / imaging satellites category
ⓘ Performance/Price and MASS score are computed across all units in the optical / imaging satellites category, regardless of era.
02 / Specs & Design
◎General6MOD.6
  • Satellite TypeReconnaissance satellite
  • First Launch Year2023
  • OperatorSouth Korea
  • Constellation Size5
  • ManufacturerThales Alenia Space
  • In ServiceYes
◈Orbit1MOD.1
  • Orbit Type (LEO/MEO/GEO)Low Earth Orbit
▣Payload2MOD.2
  • Primary PayloadSynthetic Aperture Radar (SAR) and Electro-Optical/Infrared (EO/IR)
  • Sensor TypeSAR and EO/IR
◇Program2MOD.2
  • Number Launched5
  • First Launch2023
03 / History
SERVICE LIFESPANStill in Service
  1. 2023Production started
3
years in service
5
units produced
1
countries operating
04 / Operators
Operator Countries1country
📚 Sources
📖 ENCYCLOPEDIA Browse the Optical / Imaging Satellites entry →