Please make a donation to support Gunter's Space Page.
Thank you very much for visiting Gunter's Space Page. I hope that this site is useful and informative for you.
If you appreciate the information provided on this site, please consider supporting my work by making a simple and secure donation via PayPal. Please help to run the website and keep everything free of charge. Thank you very much.

ST 1, 1B (ZX 20, 20A)


The ST 1 (Shen Tong 1) series satellites are reportedly chinese military comsats. ST 1 is the first Chinese satellite to provide the Ku-band communication and to feature advanced multiple steerable spot beam antenna technology to enable ground users to communicate while on the move as well as secured uplink transmission for satellite antenna control. It has the most powerful onboard data processing capability of chinese comsats up to this date.

China Aerospace Science and Technology Corp. manufactured the satellites based on the DFH-3 Bus. The launch vehicle was the CZ-3A rocket.

The larger ST 2 series are their successors.

Nation: China
Type / Application: Communication
Operator: People's Liberation Army (PLA)
Contractors: CAST
Equipment: C-band and Ku-band transponders
Configuration: DFH-3 Bus
Propulsion: ?
Power: 2 deployable solar arrays, batteries
Mass: 2300 kg
Orbit: GEO
Satellite COSPAR Date LS Launch Vehicle Remarks
ST 1 (ZX 20, ChinaSat 20) 2003-052A 14.11.2003 Xi LC-2 CZ-3A
ST 1B (ZX 20A, ChinaSat 20A) 2010-064A 24.11.2010 Xi LC-3 CZ-3A

Cite this page: