Issue 132

SJ-23 Visits TJS-14 then Heads East

16 Oct 2025: As noted in the 13 Oct 2025 edition of the Flash , Shijian-23 (55131) reached its historical western boundary (and then some) and decreased its SMA on 16 Oct to reverse course. SJ-23 reached as far west as 18.4° E longitude (a little further west than its previous turnaround location ranges of 19-22°E.)…

16 Oct 2025: As noted in the 13 Oct 2025 edition of the Flash, Shijian-23 (55131) reached its historical western boundary (and then some) and decreased its SMA on 16 Oct to reverse course. SJ-23 reached as far west as 18.4° E longitude (a little further west than its previous turnaround location ranges of 19-22°E.) Between 15-16 Oct Chinese space operators decreased SJ-23’s altitude ~102.4km placing SJ-23 50.7km below the GEO belt and resulting in an eastward drift rate of 0.66°/day. I expect SJ-23 will continue eastward until early-June 2026 (230 days).

China maneuvered SJ-23 just as the satellite was approaching another Chinese satellite, TJS-14 (62804). China launched TJS-14 on 23 Jan 2024 and has maintained the satellite in GEO at 18.4°E). China has released little information regarding TJS-14, only stating the satellite will be mainly used for satellite communications, radio and television, data transmission and other services, and to carry out related technical tests and verifications. As SJ-23 passed TJS-14 heading west, it came within ~47km of TJS-14. At the time of closest approach solar conditions were not favorable for SJ-23 to image TJS-14 (solar phase angle ~23°). Within 6hrs of their close approach China maneuvered SJ-23 causing it to head to the east, however the two satellites were never within 100km of one another as their orbits crossed the second time. See COMSPOC video.