TITLE: GCN CIRCULAR NUMBER: 12771 SUBJECT: GRB 111228A: P60 Observations DATE: 11/12/29 20:00:39 GMT FROM: S. Bradley Cenko at Caltech S. B. Cenko (UC Berkeley) reports on behalf of a larger collaboration: We have imaged the field of GRB111228A (Ukwatta et al., GCN 12737) with the automated Palomar 60 inch telescope. Observations were obtained in the r' and i' filters beginning at 10:27 UT on 2011 December 29 (~ 18.9 hours after the Swift trigger). We detect the optical afterglow with a magnitude of r' = 20.3 +/- 0.1 mag (AB, calibrated with respect to several point sources from the Sloan Digital Sky Survey in the field). Compared with previous reported measurements of the afterglow brightness, this suggests a steeper decay than observed at early times (e.g., Klotz et al., GCN 12742). Further observations are planned.