TITLE: GCN CIRCULAR NUMBER: 13849 SUBJECT: Planned XMM-Newton and IRAM observation of GRB 121011A DATE: 12/10/11 13:35:40 GMT FROM: Bruce Gendre at ASDC B. Gendre (ASDC/OaR/INAF), C. Feruglio (IRAM), G. Stratta (OaR) report on behalf of a larger collaboration: The GRB 121011A will be observed by XMM-Newton from 2012 Oct. 11 18:33 UT, until Oct 12 at 11:30 UT. This observation is coordinated with an IRAM observation at the Interferometer of the Plateau de Bure. We encourage any follow-up at all wavelengths, and specially spectroscopic observations to derive a redshift for this event. This message can be cited.