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GCN Circular 31636

GRB 220222B: Fermi GBM Final Real-time Localization
2022-02-22T19:34:26Z (2 years ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely LONG GRB

At 19:24:07 UT on 22 Feb 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220222B (trigger 667250652.136138 / 220222808).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 191.1, Dec = -33.5 (J2000 degrees, equivalent to J2000 12h 44m, -33d 30'), with a statistical uncertainty of 8.2 degrees.

The angle from the Fermi LAT boresight is 109.0 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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