TITLE:   GCN CIRCULAR
NUMBER:  32514
SUBJECT: GRB 220902A: Fermi GBM Final Real-time Localization
DATE:    22/09/02 10:41:15 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 10:30:00 UT on 2 Sep 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220902A (trigger 683807405.374026 / 220902438).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 30.5, Dec = 40.9 (J2000 degrees, equivalent to J2000 02h 01m, 40d 53'), with a statistical uncertainty of 8.6 degrees.

The angle from the Fermi LAT boresight is 44.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220902438/quicklook/glg_skymap_all_bn220902438.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/bn220902438/quicklook/glg_healpix_all_bn220902438.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220902438/quicklook/glg_lc_medres34_bn220902438.gif