Sejong : Commercial Satellite
Sejong-1, South Korea's first commercial Earth observation satellite, was launched in May 2022.
Sejong-1 is equipped with a red edge band, optimized for vegetation index analysis of crops and forests.
May, 2022
Jun, 2025
Mar, 2026
Nov, 2025
2028(TBD)
Sejong-1
Sejong-2
Sejong-3
Sejong-4
Sejong-5
Sejong-1
Korea's First EO Commercial Satellite
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Name : SJSAT-1
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Size : 200(W) x 100(D) x 300(H)mm, 6U CubeSat
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Weight : 10.8kg
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Orbit : LEO, 530km
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Swath : 20km
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Resolution : GSD 5M
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VNIR : 7 Bands (Multispectral)
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Launched date : May 26, 2022
We're heading to space soon!
Sejong-2
Specialized in marine and agricultural monitoring as well as urban change detection missions
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Name : SEJONG-2
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Size : 200(W) x 100(D) x 300(H)mm, 6U CubeSat
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Weight : 10.8kg
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Orbit : LEO, 590km
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Swath : 20km
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Resolution : GSD 5M
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VNIR : 8 bands (Multispectral)
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Launch Scheduled : June 23, 2025 (SpaceX Falcon)
Sejong-3
Specialized for analyzing wildfire damage, air pollution, and river water quality assessment
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Name : SEJONG-3
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Size : 200(W) x 100(D) x 300(H)mm, 6U CubeSat
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Weight : 10.8kg
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Orbit : LEO, 590km
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Swath : 20km
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Resolution : GSD 5M
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VNIR : 442 bands (Hyperspectral)
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Launch Scheduled : March 29, 2026 (SpaceX Falcon)
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Sejong-4
Incorporates a domestically developed OBC (Real-Time Operating System : NEOS + FS)
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Name : SEJONG-4
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Size : 200(W) x 100(D) x 300(H)mm, 6U CubeSat
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Weight : under 11kg
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Orbit : LEO, 600km
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Swath : 20km
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Resolution : GSD 5M
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VNIR : bands (Multispectral)
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Launch Scheduled : November 27, 2025 (4th Nuri space rocket)
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Sejong-5
Hyperspectral Imaging for Public Sector Applications
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Name : SEJONG-5
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Size : 200(W) x 100(D) x 300(H)mm, 6U CubeSat
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Weight : under 12kg
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Orbit : LEO, 600km(TBD)
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Swath : 20km
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Resolution : GSD 5M
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VNIR : Ka/K-band
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Launch Scheduled : 2028 (TBD)
