TITLE:   GCN CIRCULAR
NUMBER:  38263
SUBJECT: GRB 241117B: Fermi GBM Final Real-time Localization
DATE:    24/11/17 20:27:34 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 20:16:55 UT on 17 Nov 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 241117B (trigger 753567420.985494 / 241117845).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 323.5, Dec = 23.5 (J2000 degrees, equivalent to J2000 21h 33m, 23d 30'), with a statistical uncertainty of 1.7 degrees.

The angle from the Fermi LAT boresight is 65.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241117845/quicklook/glg_skymap_all_bn241117845.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241117845/quicklook/glg_healpix_all_bn241117845.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241117845/quicklook/glg_lc_medres34_bn241117845.gif