TITLE:   GCN CIRCULAR
NUMBER:  34226
SUBJECT: GRB 230718A: Final Localization Correction
DATE:    23/07/18 16:42:46 GMT
FROM:    Oliver J Roberts at USRA/NASA <oliver.roberts@nasa.gov>

The Fermi GBM team reports the detection of a likely LONG GRB

"At 04:30:02.35 UT on 18 July 2023, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 230718A (trigger 711347407/230718188).
This trigger was initially classified as a SHORT GRB (GCN 34225) but is in fact a LONG GRB.

The updated on-ground calculated location, using the Fermi GBM trigger data,
is RA = 185.6, Dec = 39.9 degrees, equivalent 12h 22m, +39d 54' (J2000),
with a statistical uncertainty of 15 degrees.

The angle from the Fermi LAT boresight is 43 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230718188/quicklook/glg_skymap_all_bn230718188.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/bn230718188/quicklook/glg_healpix_all_bn230718188.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230718188/quicklook/glg_lc_medres34_bn230718188.gif"