TITLE: GCN CIRCULAR NUMBER: 11585 SUBJECT: GRB110119A: MITSuME Okayama optical upper limits DATE: 11/01/20 12:50:29 GMT FROM: Daisuke Kuroda at OAO/NAOJ D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (OAO, NAOJ), S. Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of the MITSuME collaboration: We observed the field of GRB 110119A (Troja et al., GCN 11581) with the optical three color (g', Rc and Ic) CCD camera attached to the MITSuME 50cm telescope of Okayama Astrophysical Observatory. The observation started on 2011-01-20 10:11:12 UT (~11.8 hours after the burst). We did not find any new point source within the enhanced XRT error circle (Goad et al., GCNC 11582) and could not detect the previously reported afterglow (Morgan et al., GCN 11583) in all the three bands. Three sigma upper limits of the OT are listed below. We used SDSS catalog for flux calibration. T0+[day] MID-UT T-EXP[sec] g' Rc Ic ------------------------------------------------------ 0.50235 10:24:21 1200.0 >18.9 >18.9 >18.4 ------------------------------------------------------ T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]