At 11:39 Beijing Time on October 21, 2026, Galactic Energy launched its Ceres-1 sea-launched rocket (Y8) from waters near Shandong, China, delivering the Xiguang-4 01 satellite into a low Earth orbit at an altitude of 541 km. One TY-Space PST3S-H4 pico star tracker and two NST5S-A1 nano star trackers were carried aboard the satellite and entered orbit, marking the complete success of the mission.
Xiguang-4 01 is the pathfinder satellite for the Wuyang Constellation, the world's first low-inclination remote sensing satellite constellation. Developed by Guangdong Tianyuan Technology Co., Ltd., the satellite will primarily support commercial remote sensing services for low-latitude regions, including the Guangdong-Hong Kong-Macao Greater Bay Area, southern China, and areas along the 21st-Century Maritime Silk Road.
The TY-Space star trackers used in this mission have also been deployed on multiple satellite and constellation projects, including Taijing-2 02, Tianyi-41, Pakistan Remote Sensing Satellite-1, and Tianlu-1.