TITLE:   GCN CIRCULAR
NUMBER:  25818
SUBJECT: GRB 190923A: Fermi GBM Final Real-time Localization
DATE:    19/09/23 14:58:21 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 LONG GRB

At 14:48:02 UT on 23 Sep 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 190923A (trigger 590942887.75117 / 190923617).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 8.2, Dec = -11.0 (J2000 degrees, equivalent to J2000 00h 32m, -11d 00'), with a statistical uncertainty of 4.9 degrees.

The angle from the Fermi LAT boresight is 43.0 degrees.

The skymap can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190923617/quicklook/glg_skymap_all_bn190923617.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/bn190923617/quicklook/glg_healpix_all_bn190923617.fit

The GBM light curve can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190923617/quicklook/glg_lc_medres34_bn190923617.gif