GCN Circular 13995
M. Im (CEOU/SNU) and Y. Urata (NCU) on behalf of EAFON. We observed the field of GRB 121125A (Barlow et al., GCN 13993) in B and R filters using the 1-m telescope at Mt. Lemmon observatory in Arizona, US. The observation started at 2012-11-25 12:24:27 UT, or about 3.87 hours after the BAT alert, and continued for about 30 min. We identify an object in stacked images of both B and R at RA=15:14:06.586, Dec=55:18:47.95 with rms error of 0.6". This is consistent with the UVOT coordinate of the afterglow candidate reported in Barlow et al. The object has R-band magnitude of R = 19.29 +- 0.14 mag, calibrated against R2 magnitude (16.13 mag) of a USNO-B1 star at RA=15:14:07.14, Dec=+55:18:40.30. Combined with the result from Yurkov et al. (GCN 13994) and Barlow et al., our result reveals a fading behavior of the object, thus we identify the object to be the afterglow of GRB 121125A. We thank the LOAO operator, Jae-Hyuk Yoon for performing the observation.