China launches fourth tracking and data relay satellite – Satellite News Digest
Rocket: Chang Zheng 3C/G2; Payload: Tianlian 1-4; Date: 22 November 2016, 1524 UTC; Launch site: Xichang Satellite Launch Center, China. The 2,100-kg tracking and relay satellite was placed in a geostationary transfer orbit. http://www.sat-nd.com/archive/?id=2016112200