TITLE:   GCN CIRCULAR
NUMBER:  30601
SUBJECT: GRB 210807B: Fermi GBM Final Real-time Localization
DATE:    21/08/07 12:47:05 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 12:36:42 UT on 7 Aug 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210807B (trigger 650032607.844228 / 210807525).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 256.2, Dec = -32.2 (J2000 degrees, equivalent to J2000 17h 04m, -32d 12'), with a statistical uncertainty of 3.8 degrees.

The angle from the Fermi LAT boresight is 19.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210807525/quicklook/glg_skymap_all_bn210807525.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210807525/quicklook/glg_healpix_all_bn210807525.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210807525/quicklook/glg_lc_medres34_bn210807525.gif