GCN Circular 11719

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 110213A (D'Elia et al., GCNC 11705)
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 2011-02-13 09:45:46 UT (~4.5 hours after
the burst). We detected the previously reported afterglow
(Cenko, GCNC 11706) in all the three bands.


Photometric results and are listed below. We used GSC2.3 catalog for
flux calibration.

#T0+[day]  MID-UT    T-EXP[sec]   g'  g'_err   Rc  Rc_err   Ic  Ic_err
----------------------------------------------------------------------
0.19696    10:01:06   1620.0    18.26  0.09  17.15  0.05  16.53  0.06
0.21845    10:32:02   1620.0    18.78  0.11  17.51  0.05  16.75  0.05
0.23993    11:02:59   1620.0    18.79  0.16  17.60  0.07  17.05  0.07
----------------------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]