Issue 84

China Launches TJS-10 to GEO

3 Nov 2023: China launched a Long March (LM)-7A from Wenchang Space Launch Site to Geostationary Orbit (GEO), carrying the Tongxin Jishu Shiyan Weixing (TJS)-10 satellite. TJS spacecraft are classified Chinese military satellites associated with Signals Intelligence (SIGINT), missile warning, and “satellite inspection”…

3 Nov 2023: China launched a Long March (LM)-7A from Wenchang Space Launch Site to Geostationary Orbit (GEO), carrying the Tongxin Jishu Shiyan Weixing (TJS)-10 satellite. TJS spacecraft are classified Chinese military satellites associated with Signals Intelligence (SIGINT), missile warning, and “satellite inspection” missions. Chinese state media only noted the spacecraft was a “communications technology experiment.” Launch Video.

– As of 3 Nov, TJS-10 was in Geostationary Transfer Orbit (GTO) and had not arrived at its GEO slot (which is unknown at this time).

– TJS-10 is the first TJS satellite to be launched by the LM-7A and the Wenchang launch facility. China launched all previous TJS satellites using the older LM-3B (one instance of a 3C), and all launches were from Xichang.

-The LM-7A is a three-stage rocket that is expected to eventually replace the LM-3B.

LM-7A can lift 22% more mass to GTO (7,000 kg) as compared with the LM-3B/E (5,500 kg).

– China has used the LM-7A for several interesting GEO payloads including the SJ-23 and SY-12A & 12B satellites.

-The only Chinese booster capable of lifting more mass to GTO is the LM-5B.

– Most observers believe the TJS series of satellites actually serve the Chinese military, providing early warning and intelligence gathering functions.

– CAST built the TJS-1, 4 & 9, all of which are likely SIGINT satellites.

– Alternatively, analysts believe the SAST-built TJS-2, 5, 6 and 7 are part of China’s Huoyan

missile warning constellation.

– Identified as a GEO belt “inspector sat,” TJS-3 exhibited unusual behavior after launch, interacting with its apogee kick motor.

TJS-7 is the only Chinese GEO satellite over the western hemisphere, parked at 99.6° west longitude. Its mission remains a mystery.

-TJS-10’s mission is also unknown.

TJS-10 Preparing for Launch

TJS-10 Atop a LM-7A

TJS-10 mission patch

TJS Constellation