TITLE:   GCN CIRCULAR
NUMBER:  43716
SUBJECT: GRB 260212A: Fermi GBM Final Real-time Localization
DATE:    26/02/12 17:59:41 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 17:49:08 UT on 12 Feb 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260212A (trigger 792611353.21224 / 260212742).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 228.9, Dec = 74.1 (J2000 degrees, equivalent to J2000 15h 15m, 74d 05'), with a statistical uncertainty of 1.1 degrees.

The angle from the Fermi LAT boresight is 127.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260212742/quicklook/glg_skymap_all_bn260212742.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/bn260212742/quicklook/glg_healpix_all_bn260212742.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260212742/quicklook/glg_lc_medres34_bn260212742.gif