TITLE: GCN CIRCULAR NUMBER: 12678 SUBJECT: GRB 111211A: Swift/UVOT Detection DATE: 11/12/13 17:06:55 GMT FROM: Mike Siegel at PSU/Swift MOC M. H. Siegel and B.-B. Zhang (PSU) report on behalf of the Swift-UVOT team: We have analyzed 4.5 ks of UVOT data for the SuperAGILE-detected burst GRB 111211A (Lazzarotto et al., GCN Circ 12666), taken 63.5 to 76.6 ks after the trigger. Data were taken entirely in the white filter. We confirm the uncatalogued source reported by Kann et al. (GCN Circ. 12668), Zhang (GCN Circ. 12673) and Kruehler et al. (GCN Circ. 12675). However, we can not confirm any statistically significant fading at this time. The UVOT position is RA, Dec = 153.09037, +11.20801 which is equivalent to: RA (J2000): 10h 12m 21.69s Dec(J2000): +11d 12' 28.9" with an uncertainty of 0.5 arcsec (radius, 90% confidence). Preliminary photometry using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) shows: Filter T_start(ks) T_stop(ks) Exp(s) Mag white 63.5 76.6 4550 19.51+-0.03 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.05 in the direction of the burst (Schlegel et al. 1998).