South Korea's Nuri Orbits Five Microsatellites, Leaves One CubeSat Attached
South Korea's Nuri rocket completed its fifth flight, successfully placing five domestically built Earth-observation microsatellites for a national safety constellation. Nine of the ten CubeSat secondary payloads separated as planned, but PERSAT-02, built by startup Quaternion, remained attached to the upper stage, according to the Korea AeroSpace Administration. The mission was Nuri's fourth straight success after its 2021 debut failure, giving the vehicle an 80 percent success rate.
Nuri's fifth flight marked the vehicle's fourth consecutive success since its 2021 debut ended in failure, giving it an 80 percent success rate. The five microsatellites it deployed constitute South Korea's first domestically launched microsatellite constellation, built for national safety Earth observation.
Nine of the ten CubeSat secondary payloads separated as planned. PERSAT-02, a CubeSat from the startup Quaternion, stayed attached to the upper stage, the Korea AeroSpace Administration said. Because it remains with the stage, the tracked object catalog should list one fewer item than the mission manifest.
South Korea's growing launch record could strengthen its position as an independent spacefaring nation, giving domestic firms and researchers more reliable, sovereign access to orbit. A stuck CubeSat may matter little operationally, but it could complicate catalog tracking and add debris concerns for other operators. For startups like Quaternion, a separation failure may delay flight heritage and funding. Wider benefits — better Earth-observation data for safety and disaster response — could reach civilian agencies and the public over time.