TITLE: GCN CIRCULAR NUMBER: 24818 SUBJECT: GRB 190613B: KAIT Optical Afterglow Confirmation DATE: 19/06/13 18:48:19 GMT FROM: Weikang Zheng at UC Berkeley WeiKang Zheng and Alexei V. Filippenko (UC Berkeley) report on behalf of the KAIT GRB team: The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at Lick Observatory, responded to the Swift GRB 190613B (D'Ai et al. GCN 24807) starting at 2311s after the burst. Observations were performed with a sequence in the clear (roughly R), V, and I filters, and the exposure time was 20 s per image. We detected the optical afterglow at the reported Swift/UVOT position (D'Ai et al., GCN 24798; Marshall & D'Ai, GCN 24817) in clear band image. We estimate the clear band magnitude to be ~19.3 at 2321s after the burst. [GCN OPS NOTE(14jun19): The typo in Swift's name was corrected.]