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GCN Circular 33445

GRB 230310A: Fermi GBM Final Real-time Localization
2023-03-10T00:55:20Z (a year ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely LONG GRB

At 00:45:01 UT on 10 Mar 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230310A (trigger 700101906.130722 / 230310031).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 257.6, Dec = -23.5 (J2000 degrees, equivalent to J2000 17h 10m, -23d 30'), with a statistical uncertainty of 7.2 degrees.

The angle from the Fermi LAT boresight is 120.0 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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