Issue 132

King of the West (TJS-15) Appears Restless

20 Oct 2025: China repositioned TJS-15 (King of the West) (63157) 0.3° to the east (94.1° to 94.4°). The maneuvers occurred from 11-30 September and increased the point of closest approach (POCA) with USA 315 (SBIRS GEO 5) (48618) from ~112km to nearly 400km. The other three kings, TJS-16 (King of the East) (63397)…

20 Oct 2025: China repositioned TJS-15 (King of the West) (63157) 0.3° to the east (94.1° to 94.4°). The maneuvers occurred from 11-30 September and increased the point of closest approach (POCA) with USA 315 (SBIRS GEO 5) (48618) from ~112km to nearly 400km. The other three kings, TJS-16 (King of the East) (63397), and TJS-17 (King of the North) (63524) and TJS-19 (King of the South) (63924) remain in their previous positions as reported in the 31 Aug 2025 edition of the Flash. The mission of these satellites remains unknown. China announced all four had the identical mission and would be “mainly used to verify multi-band and high-speed satellite communication technology.”

– China reduced TJS-15’s SMA ~13km from 11-30 Sep 2025. The maneuver initiated a slow eastward drift which ceased in early October when China increased TJS-15’s SMA ~13km to rejoin the GEO belt.

  • There were no observations in the catalog between 11-30 Sep making precise maneuver analysis impossible (at least for me).

-China also made minor plane adjustments and reduced TJS-15’s inclination from 0.1° to 0.0°

– Unknown if the intent of TJS-15’s maneuvers were to increase distance with USA 315. Post maneuver the point of closest approach between the two satellites increased from 112km to 392km. (see graphic right)