TITLE: GCN CIRCULAR NUMBER: 24777 SUBJECT: GRB 190610B: Fermi GBM Final Real-time Localization DATE: 19/06/10 18:11:12 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 17:59:49 UT on 10 Jun 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 190610B (trigger 581882394.908204 / 190610750). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 327.4, Dec = 42.4 (J2000 degrees, equivalent to J2000 21h 49m, 42d 23'), with a statistical uncertainty of 1.2 degrees. The angle from the Fermi LAT boresight is 19.0 degrees. The skymap can be found here: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190610750/quicklook/glg_skymap_all_bn190610750.png The HEALPix FITS file, including the estimated localization systematic, can be found here: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190610750/quicklook/glg_healpix_all_bn190610750.fit The GBM light curve can be found here: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190610750/quicklook/glg_lc_medres34_bn190610750.gif