TITLE: GCN CIRCULAR NUMBER: 23694 SUBJECT: GRB 190114B: BOOTES-4/MET optical afterglow detection DATE: 19/01/14 22:31:44 GMT FROM: Alberto Castro-Tirado at Inst.de Astro. de Andalucia E. Fernandez-Garcia, Y.-D. Hu, X.-Y.Li, , A. Ayala, A. J. Castro-Tirado (IAA-CSIC), C. Perez del Pulgar, A. Castellon, I. Carrasco (Univ. de Malaga),  and D. Xiong, Y. Fan, X. Zhao, J. Bai, C. Wang, Y. Xin (Yunnan Nacional Astronomical Observatory) on behalf of a larger collaboration, report: "Following the detection of GRB 190114B by Swift/BAT (Siegel et al. GCNC 23686), the 0.6m BOOTES-4/MET robotic telescope at Lijiang Astronomical Observatory (China) obtained follow-up  observations starting at 19:53:24 UT (~0.37 hr after trigger). Within the enhaced Swift/XRT position (Goad et al. GCNC 23691) an optical source with a preliminary magnitude of 20.3 mag (clear filter) is detected, fading in brightness in the late-time images, which we suggest as the optical afterglow to GRB 190114B at coordinates (J2000) RA = 11:39:29.81, Dec =+18:53:28.1 (+/- 1"). Observations are ongoing."