Yaogan-16 1, 2 & 3

The Chinese Yaogan 9 (Remote Sensing Satellite-9) series consists of remote sensing satellites triplets launched by a CZ-4C rocket from China's Jiuquan space center. These satellites are likely military ocean surveillance satellites similar to the US Parcae (NOSS) series. The first triplet was launched on 5 March 2010. A second triplet, called Yaogan 16, was launched on 25 November 2011 and a third one, Yaogan 17 followed on 1 September 2013. The fourth triplet launched on 9 August 2014, Yaogan 20, was likely a replacement for Yaogan 9.