sentences:  Planet Gliese 667 Cb (GJ 667 Cb) was announced by HARPS on 19 October 2009, together with 29 other planets, while Gliese 667 Cc (GJ 667 Cc) was included in a paper published on 21 November 2011.More detailed data on Gliese 667 Cc were published in early February 2012.In September 2012, the discovery of two planets orbiting Gliese 163 was announced.