TITLE:   GCN CIRCULAR
NUMBER:  30853
SUBJECT: GRB 210919B: Fermi GBM Final Real-time Localization
DATE:    21/09/19 15:51:07 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 15:39:51 UT on 19 Sep 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210919B (trigger 653758796.95736 / 210919653).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 215.2, Dec = -77.1 (J2000 degrees, equivalent to J2000 14h 20m, -77d 05'), with a statistical uncertainty of 9.2 degrees.

The angle from the Fermi LAT boresight is 53.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210919653/quicklook/glg_skymap_all_bn210919653.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210919653/quicklook/glg_healpix_all_bn210919653.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210919653/quicklook/glg_lc_medres34_bn210919653.gif