TITLE: GCN CIRCULAR NUMBER: 11733 SUBJECT: GRB 110213A: YNAO-GMG Observations DATE: 11/02/15 06:46:12 GMT FROM: Jirong Mao at INAF-OAB Zhao X. H., Bai J. M., & Mao J. report on behalf of the YNAO-GMG Observation: We observed GRB110213A (D'Elia et al., GCN circ 11705) using one 2.4m telescope of Yunnan Observatory located at Gao-Mei Gu (GMG) about 7hr after the trigger. The afterglow was clearly detected. The preliminary results are: mid time (UT) filter exposure time (min) magnitude 2011-02-13 12:48:22 R 20 17.4 2011-02-13 13:08:55 V 20 18.2 2011-02-13 13:34:29 B 30 18.9 2011-02-13 14:00:28 B 20 19.0 2011-02-13 14:20:39 V 20 18.3 2011-02-13 14:40:50 R 20 18.3 The magnitudes were calibrated by NOMAD1. This meesage may be cited.