TITLE:   GCN CIRCULAR
NUMBER:  26060
SUBJECT: GRB 191023A: Fermi GBM Final Real-time Localization
DATE:    19/10/23 15:17:17 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 15:06:56 UT on 23 Oct 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 191023A (trigger 593536021.755384 / 191023630).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 295.3, Dec = 6.2 (J2000 degrees, equivalent to J2000 19h 41m, 6d 12'), with a statistical uncertainty of 1.8 degrees.

The angle from the Fermi LAT boresight is 88.0 degrees.

The skymap can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191023630/quicklook/glg_skymap_all_bn191023630.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/bn191023630/quicklook/glg_healpix_all_bn191023630.fit

The GBM light curve can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191023630/quicklook/glg_lc_medres34_bn191023630.gif