GCN Circular 43785
Subject
GRB 260219A: Fermi GBM Final Real-time Localization
Event
Date
2026-02-19T14:18:05Z (4 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 14:04:53 UT on 19 Feb 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260219A (trigger 793202698.807012 / 260219587).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 167.4, Dec = 9.6 (J2000 degrees, equivalent to J2000 11h 09m, 9d 35'), with a statistical uncertainty of 2.7 degrees.
The angle from the Fermi LAT boresight is 97.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260219587/quicklook/glg_skymap_all_bn260219587.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/bn260219587/quicklook/glg_healpix_all_bn260219587.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260219587/quicklook/glg_lc_medres34_bn260219587.gif