TITLE:   GCN CIRCULAR
NUMBER:  33726
SUBJECT: GRB 230506A: Fermi GBM Final Real-time Localization
DATE:    23/05/06 05:18:49 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 05:08:16 UT on 6 May 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230506A (trigger 705042501.650442 / 230506214).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 296.1, Dec = 20.4 (J2000 degrees, equivalent to J2000 19h 44m, 20d 23'), with a statistical uncertainty of 1.6 degrees.

The angle from the Fermi LAT boresight is 35.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230506214/quicklook/glg_skymap_all_bn230506214.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/bn230506214/quicklook/glg_healpix_all_bn230506214.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230506214/quicklook/glg_lc_medres34_bn230506214.gif