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TITLE:   GCN CIRCULAR
NUMBER:  33366
SUBJECT: GRB 230222A: Fermi GBM Final Real-time Localization
DATE:    23/02/22 09:52:14 GMT
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 09:41:49 UT on 22 Feb 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230222A (trigger 698751714.60643 / 230222404).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 292.5, Dec = -26.0 (J2000 degrees, equivalent to J2000 19h 30m, -26d 00'), with a statistical uncertainty of 11.5 degrees.

The angle from the Fermi LAT boresight is 77.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230222404/quicklook/glg_skymap_all_bn230222404.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/bn230222404/quicklook/glg_healpix_all_bn230222404.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230222404/quicklook/glg_lc_medres34_bn230222404.gif