Couple of days ago I wrote a post about mysterious satellite triplet, that I observed while trying to cathc a perseid meteors with my camera.
I posted a mail about this satellite to the Seesat -e-mail list, and with the help of Leo Barhorst, Cees Bassa and Björn Gimle I was able to identify this! This satellite was Yaogan 16, a Chinese spy satellite triplet, similar than American NOSS -triplets were. Apparently the use of these satellites is also similar.
Thanks for Leo Barhorst, Cees Bassa and Björn Gimle for identification help!