TITLE: GCN CIRCULAR NUMBER: 38990 SUBJECT: GRB 250119C: Fermi GBM Final Real-time Localization DATE: 25/01/19 22:52:34 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 22:41:06 UT on 19 Jan 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250119C (trigger 759019271.302184 / 250119945).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 163.9, Dec = 15.1 (J2000 degrees, equivalent to J2000 10h 55m, 15d 05'), with a statistical uncertainty of 8.8 degrees.

The angle from the Fermi LAT boresight is 66.0 degrees.

The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250119945/q...

The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250119945/q...

The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250119945/q...

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