TITLE: GCN CIRCULAR NUMBER: 39327 SUBJECT: GRB 250215A: Fermi GBM Final Real-time Localization DATE: 25/02/15 02:42:29 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 02:31:54 UT on 15 Feb 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250215A (trigger 761279519.94116 / 250215105).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 157.6, Dec = -34.5 (J2000 degrees, equivalent to J2000 10h 30m, -34d 30'), with a statistical uncertainty of 2.7 degrees.
The angle from the Fermi LAT boresight is 21.0 degrees.
The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250215105/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/bn250215105/q...
The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250215105/q...
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