TITLE: GCN CIRCULAR NUMBER: 42309 SUBJECT: GRB 251016A: Fermi GBM Final Localization DATE: 25/10/16 15:46:56 GMT FROM: Jacob Smith at Fermi-GBM Team <jrs0118@uah.edu> The Fermi GBM team reports the detection of a likely SHORT GRB "At 14:59:19.76 UT on 16 October 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 251016A (trigger 782319564/251016625). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 268.93, Dec = -48.82 (J2000 degrees, equivalent to J2000 17h 55m, -48d 49'), with a statistical uncertainty of 3.55 degrees. The angle from the Fermi LAT boresight is 33 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251016625/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/bn251016625/q... The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251016625/q..." View this GCN Circular online at https://gcn.nasa.gov/circulars/42309. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...