GCN Circular 1151
K. Z. Stanek (Harvard-Smithsonian CfA), P. M. Garnavich (Notre Dame) and Lukasz Wyrzykowski (Warsaw University Observatory) report: Further R-band observations of the possible optical afterglow of the GRB011121 carried out with the OGLE 1.3m telescope (+8kx8k OGLE-III mosaic) 12.5 hours after the burst, indicate a fading behavior of the new source at 11:34:30.38, -76:01:41.3 (J2000) reported by Wyrzykowski et al. (GCN 1150): HJD-2450000 UT R_c exp 2235.71890 011122 05:19 18.31+-0.03 200 sec 2235.80322 011122 07:20 18.64+-0.03 200 sec Errors in the magnitudes are statistical only. The R-band magnitudes are relative to star "A" (11:34:18.9, -76:01:38.1, J2000), assuming its magnitude R=17.4 (see GCN 1150). Inspection of the Digitized Sky Survey shows a faint object 0.5" to the northeast of the OT. The source, possibly the host galaxy has a magnitude of approximately R=20.4 based on the assumed brightness of star A. We have also obtained BVI observations of the afterglow, reductions of which are under way. This message can be cited.