TITLE:   GCN CIRCULAR
NUMBER:  30609
SUBJECT: GRB 210807C: Fermi GBM Final Real-time Localization
DATE:    21/08/07 23:05:39 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 22:55:24 UT on 7 Aug 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210807C (trigger 650069729.307352 / 210807955).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 147.6, Dec = -51.4 (J2000 degrees, equivalent to J2000 09h 50m, -51d 23'), with a statistical uncertainty of 1.7 degrees.

The angle from the Fermi LAT boresight is 60.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210807955/quicklook/glg_skymap_all_bn210807955.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/bn210807955/quicklook/glg_healpix_all_bn210807955.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210807955/quicklook/glg_lc_medres34_bn210807955.gif