TITLE: GCN CIRCULAR NUMBER: 15622 SUBJECT: GRB 131227A: Xinglong optical observations DATE: 13/12/27 16:02:49 GMT FROM: Dong Xu at DARK/NBI D. Xu (DARK/NBI), T.-M. Zhang, L.-P. Xin, F. Xiao (NAOC) report: We observed the field of GRB 131227A (Oates et al., GCN 15616) using the 2.16m Xinglong telescope, equipped with BFOSC and located in Heibei, China. We obtained 2x600s R-band images with a mean time of 9.086 hr after the BAT trigger. At the afterglow position (Zheng et al., GCN 15617), which is within the XRT error circle (Evans & Goad, GCN 15618), the afterglow has decayed to have R>21.2 mag, calibrated with nearby USNO B1 field.