////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Wed 31 Dec 25 00:25:48 UT NOTICE_TYPE: Fermi-GBM Alert RECORD_NUM: 1 TRIGGER_NUM: 788833547 GRB_DATE: 21040 TJD; 365 DOY; 25/12/31 GRB_TIME: 1542.73 SOD {00:25:42.73} UT TRIGGER_SIGNIF: 5.8 [sigma] TRIGGER_DUR: 0.064 [sec] E_RANGE: 2-2 [chan] 23-47 [keV] ALGORITHM: 26 DETECTORS: 1,1,0, 0,0,1, 0,0,0, 0,0,0, 0,0, LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251231018/quicklook/glg_lc_medres34_bn251231018.gif COMMENTS: Fermi-GBM Trigger Alert. COMMENTS: This trigger occurred at longitude,latitude = 169.47,-7.18 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Wed 31 Dec 25 00:26:12 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 48 TRIGGER_NUM: 788833547 GRB_RA: 190.533d {+12h 42m 08s} (J2000), 190.851d {+12h 43m 24s} (current), 189.922d {+12h 39m 41s} (1950) GRB_DEC: +30.267d {+30d 16' 00"} (J2000), +30.124d {+30d 07' 28"} (current), +30.541d {+30d 32' 26"} (1950) GRB_ERROR: 33.93 [deg radius, statistical plus systematic] GRB_INTEN: 357 [cnts/sec] DATA_SIGNIF: 2.60 [sigma] INTEG_TIME: 0.016 [sec] GRB_DATE: 21040 TJD; 365 DOY; 25/12/31 GRB_TIME: 1542.73 SOD {00:25:42.73} UT GRB_PHI: 50.00 [deg] GRB_THETA: 135.00 [deg] DATA_TIME_SCALE: 0.0160 [sec] HARD_RATIO: 0.00 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 100% Unreliable location 2nd_MOST_LIKELY: 0% n/a DETECTORS: 1,1,0, 0,0,1, 0,0,0, 0,0,0, 0,0, SUN_POSTN: 280.41d {+18h 41m 38s} -23.09d {-23d 05' 24"} SUN_DIST: 100.99 [deg] Sun_angle= 6.0 [hr] (West of Sun) MOON_POSTN: 48.58d {+03h 14m 20s} +23.02d {+23d 01' 14"} MOON_DIST: 115.68 [deg] MOON_ILLUM: 84 [%] GAL_COORDS: 155.41, 86.26 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 176.25, 31.68 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251231018/quicklook/glg_lc_medres34_bn251231018.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 169.47,-7.18 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Wed 31 Dec 25 00:26:54 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 87 TRIGGER_NUM: 788833547 GRB_RA: 28.950d {+01h 55m 48s} (J2000), 29.414d {+01h 57m 39s} (current), 28.065d {+01h 52m 16s} (1950) GRB_DEC: +61.633d {+61d 37' 60"} (J2000), +61.760d {+61d 45' 35"} (current), +61.389d {+61d 23' 19"} (1950) GRB_ERROR: 26.72 [deg radius, statistical plus systematic] GRB_INTEN: 817 [cnts/sec] DATA_SIGNIF: 3.70 [sigma] INTEG_TIME: 0.016 [sec] GRB_DATE: 21040 TJD; 365 DOY; 25/12/31 GRB_TIME: 1542.73 SOD {00:25:42.73} UT GRB_PHI: 268.00 [deg] GRB_THETA: 130.00 [deg] DATA_TIME_SCALE: 0.0160 [sec] HARD_RATIO: -0.32 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 93% GRB 2nd_MOST_LIKELY: 5% Cyg X-1 DETECTORS: 1,1,0, 0,0,1, 0,0,0, 0,0,0, 0,0, SUN_POSTN: 280.41d {+18h 41m 38s} -23.09d {-23d 05' 24"} SUN_DIST: 119.16 [deg] Sun_angle= -7.3 [hr] (East of Sun) MOON_POSTN: 48.59d {+03h 14m 22s} +23.02d {+23d 01' 21"} MOON_DIST: 40.90 [deg] MOON_ILLUM: 84 [%] GAL_COORDS: 130.50, -0.29 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 53.46, 45.71 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251231018/quicklook/glg_lc_medres34_bn251231018.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 169.47,-7.18 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Wed 31 Dec 25 00:35:09 UT NOTICE_TYPE: Fermi-GBM Final Position RECORD_NUM: 0 TRIGGER_NUM: 788833547 GRB_RA: 312.060d {+20h 48m 14s} (J2000), 312.504d {+20h 50m 01s} (current), 311.203d {+20h 44m 49s} (1950) GRB_DEC: -46.030d {-46d 01' 47"} (J2000), -45.933d {-45d 55' 56"} (current), -46.215d {-46d 12' 53"} (1950) GRB_ERROR: 16.37 [deg radius, statistical only] GRB_DATE: 21040 TJD; 365 DOY; 25/12/31 GRB_TIME: 1542.73 SOD {00:25:42.73} UT GRB_PHI: 326.00 [deg] GRB_THETA: 12.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 280.42d {+18h 41m 40s} -23.09d {-23d 05' 22"} SUN_DIST: 34.53 [deg] Sun_angle= -2.1 [hr] (East of Sun) MOON_POSTN: 48.68d {+03h 14m 43s} +23.05d {+23d 02' 49"} MOON_DIST: 110.49 [deg] MOON_ILLUM: 84 [%] GAL_COORDS: 354.20,-39.02 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 301.49,-27.08 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251231018/quicklook/glg_lc_medres34_bn251231018.gif LOC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251231018/quicklook/glg_locplot_all_bn251231018.png COMMENTS: Fermi-GBM Final Position. COMMENTS: This Notice was ground-generated -- not flight-generated. COMMENTS: The LC_URL file should be available by the time this FINAL notice is produced. COMMENTS: This notice was generated completely by automated pipeline processing. COMMENTS: This is likely a Short GRB. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Wed 31 Dec 25 02:39:45 UT NOTICE_TYPE: Fermi-GBM Final Position RECORD_NUM: 0 TRIGGER_NUM: 788833547 GRB_RA: 280.400d {+18h 41m 36s} (J2000), 280.793d {+18h 43m 10s} (current), 279.644d {+18h 38m 35s} (1950) GRB_DEC: -22.780d {-22d 46' 47"} (J2000), -22.753d {-22d 45' 11"} (current), -22.828d {-22d 49' 41"} (1950) GRB_ERROR: 1.00 [deg radius, statistical only] GRB_DATE: 21040 TJD; 365 DOY; 25/12/31 GRB_TIME: 1542.73 SOD {00:25:42.73} UT GRB_PHI: 0.00 [deg] GRB_THETA: 43.98 [deg] E_RANGE: 10.000 - 50.000 [keV] LOC_ALGORITHM: 415 (Gnd S/W Version number) SUN_POSTN: 280.51d {+18h 42m 03s} -23.08d {-23d 05' 00"} SUN_DIST: 0.42 [deg] Sun_angle= -0.0 [hr] (East of Sun) MOON_POSTN: 50.01d {+03h 20m 02s} +23.41d {+23d 24' 28"} MOON_DIST: 133.53 [deg] MOON_ILLUM: 85 [%] GAL_COORDS: 11.44, -8.13 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 279.58, 0.31 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251231018/quicklook/glg_lc_medres34_bn251231018.gif LOC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251231018/quicklook/glg_locplot_all_bn251231018.png COMMENTS: Fermi-GBM Final Position. COMMENTS: This Notice was ground-generated -- not flight-generated. COMMENTS: The LC_URL file should be available by the time this FINAL notice is produced. COMMENTS: This notice has human-in-the-loop processing.