TITLE: GCN CIRCULAR NUMBER: 6688 SUBJECT: AGILE-ACS position for the SGR 1806-20 July 27 burst DATE: 07/07/30 16:25:36 GMT FROM: Sandro Mereghetti at IASF/CNR F.Perotti, A.Giuliani, S.Mereghetti, M.Fiorini, S.Vercellone, A.Chen, A.Pellizzoni (IASF-Milano), C.Labanti, M.Trifoglio, G.Di Cocco (IASF-Bologna), M.Tavani, M.Feroci, A.Argan, A.Trois (IASF-Roma), G.Picozza (INFN-Roma), F.Longo, G. Barbiellini (INFN-Trieste), on behalf of the AGILE Team and P. Giommi, L.A. Antonelli, C. Pittori (ASDC), and L. Salotti (ASI) report: The SGR-like burst detected on July 27 at about 06:41 UT with Konus/Wind, INTEGRAL-SPI-ACS, RHESSI and Suzaku-WAM (Golenetskii et al. GCN 6684), and likely associated to SGR 1806-20, has been seen also by the Anticoincidence system of AGILE. This segmented anticoincidence detector surrounds the gamma-ray tracker on five sides (top and 4 lateral). The relative intensity of the count rates measured from the different sides allows to estimate the arrival direction of the detected bursts. Based on a simple geometrical model, the detection of this event in two of the lateral panels and its non-detection in the top panel, yields an instrumental azimuthal angle within 3 degrees from that of SGR 1806-20. We thus support the association of this event with SGR 1806-20.