TITLE: GCN CIRCULAR NUMBER: 27711 SUBJECT: GRB 200510A: Fermi GBM Final Real-time Localization DATE: 20/05/10 10:51:33 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 10:41:16 UT on 10 May 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200510A (trigger 610800081.958626 / 200510445). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 155.1, Dec = -1.9 (J2000 degrees, equivalent to J2000 10h 20m, -1d 53'), with a statistical uncertainty of 1.5 degrees. The angle from the Fermi LAT boresight is 67.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200510445/quicklook/glg_skymap_all_bn200510445.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200510445/quicklook/glg_healpix_all_bn200510445.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200510445/quicklook/glg_lc_medres34_bn200510445.gif