TITLE:   GCN CIRCULAR
NUMBER:  33807
SUBJECT: GRB 230517A: Fermi GBM Final Real-time Localization
DATE:    23/05/17 11:17:12 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 11:05:46 UT on 17 May 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230517A (trigger 706014351.299236 / 230517462).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 120.7, Dec = -49.1 (J2000 degrees, equivalent to J2000 08h 02m, -49d 06'), with a statistical uncertainty of 1.6 degrees.

The angle from the Fermi LAT boresight is 23.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230517462/quicklook/glg_skymap_all_bn230517462.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230517462/quicklook/glg_healpix_all_bn230517462.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230517462/quicklook/glg_lc_medres34_bn230517462.gif