TITLE:   GCN CIRCULAR
NUMBER:  31630
SUBJECT: GRB 220222A: Fermi GBM Final Real-time Localization
DATE:    22/02/22 02:31:50 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 02:21:17 UT on 22 Feb 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220222A (trigger 667189282.835626 / 220222098).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 27.1, Dec = -8.0 (J2000 degrees, equivalent to J2000 01h 48m, -8d 00'), with a statistical uncertainty of 2.3 degrees.

The angle from the Fermi LAT boresight is 59.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220222098/quicklook/glg_skymap_all_bn220222098.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/bn220222098/quicklook/glg_healpix_all_bn220222098.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220222098/quicklook/glg_lc_medres34_bn220222098.gif