Issue 92

China Launches TJS-11 Experimental Satellite

23 Feb: China launched a Long March-5 containing the TJS-11 experimental satellite from Wenchang. China released little information regarding the satellite's mission, stating it would be mainly used to carry out multi-band, high-speed satellite communication technology verification. Like other recently launched TJS…

23 Feb: China launched a Long March-5 containing the TJS-11 experimental satellite from Wenchang. China released little information regarding the satellite’s mission, stating it would be mainly used to carry out multi-band, high-speed satellite communication technology verification. Like other recently launched TJS satellites, TJS-11 is in GEO. The satellite remained in GTO until ~ 4 March. It is now located at 120.1°E. As with Yaogan-41, the TJS-11 launch featured an extended fairing on the LM-5. TJS-11’s GEO orbit also appears to be similarly inclined as Yaogan-41 (5.5° vs 4.8° respectively). Yaogan-41 is believed to be an imagery satellite. Launch Video.

– TJS-11 was in a Geosynchronous Transfer Orbit (GTO) from 23 Feb – ~4 Mar or nearly 10 days. It has now joined the GEO belt at 120.1°E (as of 5 March).

-TJS-11 is the first TJS satellite launched on a LM-5. As with the YG-41 imagery satellite launched 15 Dec 2023 the LM-5 was equipped with an elongated 18.5m fairing (normal is 12.3m).

-TJS-11 is positioned between Gaofen-13-01(2.4° separation) and YG-41 (3° separation). Gaofen-13-01 is also a GEO-based imagery satellite.

– At 5.5° TJS-11’s orbit is the most inclined of any of the TJS satellite family. The TJS constellation is believed to consist of primarily SIGINT (TJS-1/4/9) and Missile Warning (TJS-2/5/6) satellites.TJS-3, 7 and 10 have an unknown missions. TJS-11’s unique orbit suggests the satellite may be fulfilling a different mission.

– TJS-11’s inclination is .7° greater than that of Yaogan-41.

– China currently has 4 GEO based EO/IR imagery satellites: GF-4, GF-13-01, GF-13-02 and YG-41.

– China is also the only nation in the world to have a Synthetic Aperture Radar (SAR) imaging satellite operating in GEO. LudiTance-4-01 was launched in August 2023. It is located further west (89.6°E) and has an inclination of >16°. China launched LudiTance-4-01 on 12 Aug 2023 from Xichang using a LM-3B.

TJS Constellation + Yaogan-41 (spaceaware.io & space.skyrocket.de)