TJS 3

TJS-3= Tongxing Jishu Shiyan 3 (Communications Engineering Test Sat 3)

Subsatellite TJS 3 subsat launched from mother satellite.

Date	Position	Remarks
31 Dec 2018	58° E

On Dec 24, 2018 China′s CALT launched a CZ-3C from Xichang with the TJS-3 (Tongxing Jishu Shiyan 3, Communications Engineering Test Sat 3).
TJS seems to be a cover name for several military GEO programs. The TJS-1 is thought to be a large GEO SIGINT, Qianshao-3; TJS-2 is thought to be the Huoyan-1 missile early warning test satellite.
The use of the CZ-3C instead of the CZ-3B for the TJS-3 launch (CZ-3C has only 2 strapons rather than 4) suggests it may be different from both of the first two; TJS-3 is reported to be a SAST/Shanghai payload. TJS-3 reached GEO over 58E by Dec 31, 2018 and released a possible debris object or small secondary payload.

Ref.: #7(JR759) - update: 09.03.19