Key Takeaways
- The Astroscale ISSA-J1 mission, set to launch in 2027, will inspect two inactive Japanese satellites.
- Using a close-range, non-contact approach, the mission aims to gather crucial data about the satellites’ conditions.
- The ISSA-J1 spacecraft is being developed under Japan’s Small Business Innovation Research Program and features advanced maneuvering capabilities.
Mission Overview
Astroscale is preparing to launch the ISSA-J1 (In-situ Space Situational Awareness – Japan 1) mission in 2027. This pivotal mission will focus on the inspection of two non-operational Japanese satellites: the Advanced Land Observing Satellite (ALOS) and the Advanced Earth Observing Satellite-II (ADEOS-II), both launched in the early 2000s.
To execute this mission, the ISSA-J1 spacecraft will first enter Earth’s orbit before approaching ALOS at a safe distance. The spacecraft will gradually close the gap for a comprehensive inspection, then switch its focus to either Midori-II or ADEOS-II, repeating the same careful process. Notably, all observations will occur without any physical contact, ensuring the safety of the satellites in their orbits.
Nobu Okada, Managing Director of Astroscale Japan, emphasizes the mission’s significance: “On-orbit inspection provides critical insight into the condition of satellites that cannot be obtained from the ground.” This capability enables satellite operators to better understand the health of their spacecraft and prepare for future servicing needs, potentially revolutionizing the field of commercial in-orbit inspections and enhancing space situational awareness.
Technical Specifications
The ISSA-J1 spacecraft is currently being developed within Japan’s Small Business Innovation Research Program. When operational, it will measure approximately 1,300mm by 10,000mm by 2,200mm, equipped with solar panels for power. To maneuver through space and reach the target satellites, it will utilize a set of 12 thrusters—10 chemical propulsion thrusters and 2 electric propulsion thrusters.
This innovative mission, still under development, aims to expand the possibilities for understanding and servicing satellites in orbit. The successful execution of ISSA-J1 may mark a significant milestone in commercial space operations and satellite maintenance.
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