GCN Circular 45088
Subject
GRB 260706A: Fermi GBM Final Real-time Localization
Event
Date
2026-07-06T16:24:06Z (3 days ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
Via
email
The Fermi GBM team reports the detection of a likely LONG GRB
At 16:12:21 UT on 6 Jul 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260706A (trigger 805047146.426808 / 260706675).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 17.5, Dec = -40.6 (J2000 degrees, equivalent to J2000 01h 10m, -40d 36'), with a statistical uncertainty of 5.4 degrees.
The angle from the Fermi LAT boresight is 57.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260706675/quicklook/glg_skymap_all_bn260706675.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260706675/quicklook/glg_healpix_all_bn260706675.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260706675/quicklook/glg_lc_medres34_bn260706675.gif