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GCN Circular 33807

GRB 230517A: Fermi GBM Final Real-time Localization
2023-05-17T11:17:12Z (22 days ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
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: The HEALPix FITS file, including the estimated localization systematic, can be found here: The GBM light curve can be found here:
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