Record Satellite Launch
South Korea prepares to launch a record 15 satellites aboard the Nuri rocket.
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The launch is scheduled for a primary window of 12:23 p.m. to 1:23 p.m. local time on October 7, with a backup window from October 8 to 14 in case of unfavorable weather or technical delays. The satellites are intended for a sun-synchronous orbit about 570 kilometers above Earth.
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Each NeonSat weighs less than 100 kilograms and carries an electro-optical camera capable of approximately 1-meter-resolution black-and-white imagery and 4-meter-resolution color imagery.
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The five satellites are expected to gradually establish consistent spacing over two to three months after launch, with the completed 10-satellite system intended to observe the Korean Peninsula more than three times per day.
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The 10 CubeSats serving as secondary payloads were developed by domestic companies, universities and research institutions and are intended primarily for research and technology demonstrations.
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To accommodate the unusually dense payload, engineers increased the launch mass by about 100 kilograms and added an expandable payload adapter that allows the five primary satellites and CubeSats to be arranged more closely together.
South Korea's Nuri rocket will attempt a historic launch on October 7, carrying a record 15 satellites into orbit. The mission marks the country's first deployment of a multi-satellite constellation from domestic soil, with five NeonSat Earth-observation satellites as primary payloads and 10 CubeSats as secondary cargo. Kyodo News reports this represents a major shift for South Korea's space program from single-satellite launches toward operating coordinated satellite networks.
The NeonSat satellites will monitor the Korean Peninsula for national security, wildfires, floods and disaster response. Each weighs under 100 kilograms and carries cameras capable of 1-meter black-and-white and 4-meter color resolution imagery. Tech Times notes this launch gives Hanwha Aerospace full operational command of South Korea's first constellation deployment.
A Packed Payload With Precise Release Timing
The October 7 primary launch window runs from 12:23 p.m. to 1:23 p.m. local time, with backup windows October 8 through 14 for weather or technical delays. Streamline Feed confirms the satellites will enter a sun-synchronous orbit about 570 kilometers above Earth. Engineers added a low-shock separation system and attitude-control procedures to deploy the five NeonSats and 10 CubeSats safely without collision risk.
To pack 15 satellites aboard, engineers increased launch mass by 100 kilograms and added an expandable payload adapter. This allows closer stacking of primary and secondary payloads. The five NeonSats will gradually establish spacing over two to three months after launch, a technique that reduces immediate orbital congestion.
Building South Korea's First Operational Constellation
The completed 10-satellite NeonSat system will observe the Korean Peninsula more than three times daily once all five satellites are on-station. Korea Herald reports five additional NeonSat satellites are planned for Nuri's sixth launch in 2025, doubling the constellation's coverage capacity. This schedule accelerates South Korea's transition from one-off satellite missions to continuous regional monitoring.
Each NeonSat satellite delivers complementary imaging: 1-meter resolution black-and-white pictures for precise detail and 4-meter resolution color imagery for broader context. The staggered spacing ensures at least one satellite passes over any target location multiple times daily, meeting stringent national security and disaster-response requirements.
CubeSats Advance South Korea's Space Research Ecosystem
The 10 CubeSats aboard represent contributions from domestic companies, universities and research institutions. These smaller satellites serve primarily as research and technology demonstration platforms rather than operational payloads. Their inclusion on this high-profile Nuri flight provides South Korean researchers direct access to space testing otherwise difficult to arrange independently.
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