TITLE:   GCN CIRCULAR
NUMBER:  30111
SUBJECT: GRB 210601A: Fermi GBM Final Real-time Localization
DATE:    21/06/01 17:32:24 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 SHORT GRB

At 17:22:13 UT on 1 Jun 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210601A (trigger 644260938.537058 / 210601724).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 277.1, Dec = -26.7 (J2000 degrees, equivalent to J2000 18h 28m, -26d 41'), with a statistical uncertainty of 28.7 degrees.

The angle from the Fermi LAT boresight is 133.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210601724/quicklook/glg_skymap_all_bn210601724.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/bn210601724/quicklook/glg_healpix_all_bn210601724.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210601724/quicklook/glg_lc_medres34_bn210601724.gif