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GCN Circular 31489

Subject
GRB 220118A: Fermi GBM Final Real-time Localization
Date
2022-01-18T18:30:59Z (2 years ago)
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 18:20:35 UT on 18 Jan 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220118A (trigger 664222840.838306 / 220118764).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 191.4, Dec = 23.6 (J2000 degrees, equivalent to J2000 12h 45m, 23d 36'), with a statistical uncertainty of 5.0 degrees.

The angle from the Fermi LAT boresight is 52.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220118764/quicklook/glg_skymap_all_bn220118764.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220118764/quicklook/glg_healpix_all_bn220118764.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220118764/quicklook/glg_lc_medres34_bn220118764.gif
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