TITLE:   GCN CIRCULAR
NUMBER:  32773
SUBJECT: GRB 221016A: Fermi GBM Final Real-time Localization
DATE:    22/10/16 23:50:37 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 23:39:22 UT on 16 Oct 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 221016A (trigger 687656367.709164 / 221016986).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 37.6, Dec = -32.1 (J2000 degrees, equivalent to J2000 02h 30m, -32d 06'), with a statistical uncertainty of 2.2 degrees.

The angle from the Fermi LAT boresight is 98.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221016986/quicklook/glg_skymap_all_bn221016986.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/bn221016986/quicklook/glg_healpix_all_bn221016986.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221016986/quicklook/glg_lc_medres34_bn221016986.gif