TITLE:   GCN CIRCULAR
NUMBER:  32233
SUBJECT: GRB 220620B: Fermi GBM Final Real-time Localization
DATE:    22/06/20 06:26:49 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 06:16:25 UT on 20 Jun 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220620B (trigger 677398590.943632 / 220620261).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 326.9, Dec = -44.6 (J2000 degrees, equivalent to J2000 21h 47m, -44d 36'), with a statistical uncertainty of 8.9 degrees.

The angle from the Fermi LAT boresight is 68.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220620261/quicklook/glg_skymap_all_bn220620261.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/bn220620261/quicklook/glg_healpix_all_bn220620261.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220620261/quicklook/glg_lc_medres34_bn220620261.gif