TITLE: GCN CIRCULAR NUMBER: 28048 SUBJECT: GRB 200630B: Fermi GBM Final Localization DATE: 20/07/01 01:03:56 GMT FROM: Rachel Hamburg at UAH The Fermi GBM team reports the detection of a likely long GRB. At 23:31:21.89 UT on 30 June 2002, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200630B (trigger 615252686 / 200630980). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 79.3, Dec = +31.0 (J2000 degrees, equivalent to J2000 79h 16m, 30d 59m'), with a statistical uncertainty of 3.9 degrees. The angle from the Fermi LAT boresight is 66 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200630980/quicklook/glg_skymap_all_bn200630980.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/bn200630980/quicklook/glg_healpix_all_bn200630980.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200630980/quicklook/glg_lc_medres34_bn200630980.gif