TITLE: GCN CIRCULAR NUMBER: 18955 SUBJECT: GRB 160131A: Xinglong 60cm WFT optical observation DATE: 16/01/31 12:19:37 GMT FROM: L.P. Xin at NAOC L. P. Xin, X. M. Meng, Y. J. Xiao, J. Y. Wei, E. W. Liang, X. G. Wang, Y. G. Yang, X. M. Lu, L. Huang, X. H. Han , H. B. Cai, Y. L. Qiu, J. Wang, C. Wu, J. S. Deng, H. L. Li and D. Xu report: We observed GRB 160131A (Page et al. GCN 18951) with 60cm WFT telescope at 10:29:14UT, about 127 min after the burst. The optical afterglow (Page et a.., GCN 18951, YurKov et al., GCN 18952, Guidorzi et al., GCN 18953, Xin et al., 18954) was detected in our white and R-band images. The brightness of the optical afterglow is about 15.85 mag at the mid time of 127.5 min afer the burst, calibrated by the USNO B1.0 star (RA=05:12:39.8 DEC=-7:02:02 R2=15.51mag). Observations are continuing The message may be cited.