TITLE: GCN CIRCULAR NUMBER: 36663 SUBJECT: GRB 240612B: Fermi GBM Final Real-time Localization DATE: 24/06/12 12:26:59 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 12:16:17 UT on 12 Jun 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240612B (trigger 739887382.859234 / 240612511). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 328.8, Dec = 11.5 (J2000 degrees, equivalent to J2000 21h 55m, 11d 30'), with a statistical uncertainty of 5.8 degrees. The angle from the Fermi LAT boresight is 68.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240612511/quicklook/glg_skymap_all_bn240612511.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240612511/quicklook/glg_healpix_all_bn240612511.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240612511/quicklook/glg_lc_medres34_bn240612511.gif