TITLE:   GCN CIRCULAR
NUMBER:  28254
SUBJECT: GRB 200817A: Fermi GBM Final Real-time Localization
DATE:    20/08/17 09:36:37 GMT
FROM:    Fermi GBM Team at MSFC/Fermi-GBM  <do_not_reply@GIOC.nsstc.nasa.gov>

The Fermi GBM team reports the detection of a likely SHORT GRB

At 09:25:20 UT on 17 Aug 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200817A (trigger 619349125.224034 / 200817393).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 194.5, Dec = 51.8 (J2000 degrees, equivalent to J2000 12h 58m, 51d 47'), with a statistical uncertainty of 16.5 degrees.

The angle from the Fermi LAT boresight is 110.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200817393/quicklook/glg_skymap_all_bn200817393.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/bn200817393/quicklook/glg_healpix_all_bn200817393.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200817393/quicklook/glg_lc_medres34_bn200817393.gif