TITLE: GCN CIRCULAR NUMBER: 25589 SUBJECT: GRB 190829A: NOEMA detection of the mm afterglow DATE: 19/08/31 15:01:35 GMT FROM: Alexander Kann at IAA-CSIC A. de Ugarte Postigo (HETH/IAA-CSIC and DARK/NBI), M. Bremer (IRAM), D. A. Kann (HETH/IAA-CSIC), S. Schulze (Weizmann), C. C. Thoene, M. Blazek, K. Bensch, J. F. Agui (all HETH/IAA-CSIC), L. Izzo (DARK/NBI), D. A. Perley (LJMU), S. Martin (ALMA), I. de Gregorio-Monsalvo (ESO), M. Michalowski (AOI-AMU), D. B. Malesani (DARK/NBI, DAWN/NBI) R. Sanchez-Ramirez (INAF-IAPS) report: We observed the afterglow of GRB 190829A (Fermi GBM team, GCN #25551; Dichiara et al., GCN #25552), at a redshift of z = 0.0785 (Valeev et al. GCN #25565) with NOEMA at 90 GHz. Observations started at 01:26 UT on 31 August, 29.48 hrs after the GRB. The afterglow is well detected and had a flux density of 6.3 mJy at 90 GHz. We derive the following refined coordinates for the afterglow: RA. (J2000): 02:58:10.510 Dec (J2000): -08:57:28.44 with an error of +/- 0".1.