TITLE: GCN CIRCULAR NUMBER: 16418 SUBJECT: GRB 140619A: Swift/UVOT Observations DATE: 14/06/20 00:27:09 GMT FROM: Mike Siegel at PSU/Swift MOC M. H. Siegel (PSU), F. E. Marshall (NASA/GSFC), J. Linevsky (PSU), and M. De Pasquale (INAF-IASFPA) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 140619A 147 s after the BAT trigger (De Pasquale et al., GCN Circ. 16415). We confirm a faint afterglow consistent with the XRT position is detected in the initial UVOT exposures. We have corrected the positions in the 2.7' x 2.7� UVOT sub-image by comparing positions with the Digital Sky Survey. The UVOT afterglow is located at: RA (J2000) = 01:48:26.15 = 27.10896 (deg.) Dec (J2000) = -39:15:32.6 = -39.25906 (deg.) with an estimated uncertainty of 1.0 arc sec. (radius, 90% confidence). Preliminary detections and 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white (fc) 147 245 96 20.39+-0.24 white 5112 5312 196 >21.05 b 11745 12179 422 >20.65 u 10833 11740 885 >20.82 uvw1 5933 6133 196 >19.77 uvm2 5727 5927 196 >19.59 uvw2 5317 5517 196 >19.87 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.01 in the direction of the burst (Schlegel et al. 1998).