TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4111 SUBJECT: Afterglow candidate of GRB 051016B observed at Lulin DATE: 05/10/18 09:38:17 GMT FROM: Yuji Urata at RIKEN D. Kinoshita, Y.T. Chen, Y.L. Wu, K-Y. Huang, W-H. Ip(NCU), Y. Urata (RIKEN) on behalf of EAFON report: " We have observed the field of GRB 051016B (Parsons et al. GCN 4103) with Lulin 1m telescope at 17.845 (1.08 days after the burst). The R-band stacked image made from 5 x 300sec exposure do not show the candidate source reported by Chen et al (GCN 4105). These results suggest that the source located at RA=08:48:27.81 DEC=+13:39:20.0 is the afterglow of GRB 051016B. These images are available at http://140.115.34.82/~qq/grb/GRB051016B_LOT.jpg Our light curve around 1.5-2 hour do not show power-law decay as we reported (Chen et al GCN 4105). However, several early afterglows show platue phase such as GRB 041006 (Urata et al. ApJL submitted). This message may be cited."