Overview

• Data from COMSPOC and s2a Systems suggest Shijian-25 docked with Shijian-21 in geostationary orbit between July 2 and 6.
• The January-launched refuelling test vehicle executed multiple rendezvous maneuvers in June, closing to within one kilometre before final contact.
• A verified operation would mark the first autonomous satellite fuel transfer at 35,786 kilometres altitude, a milestone NASA has yet to achieve beyond low Earth orbit.
• In-orbit refuelling capabilities promise to extend communications satellites’ operational lifespans and curb space debris generation.
• U.S. Space Force surveillance satellites USA 270 and USA 271 remain positioned to monitor the satellites as China has not officially confirmed the transfer.