////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Mon 28 Sep 26 00:31:22 UT NOTICE_TYPE: Fermi-GBM Alert RECORD_NUM: 1 TRIGGER_NUM: 812248281 GRB_DATE: 21311 TJD; 271 DOY; 26/09/28 GRB_TIME: 1876.78 SOD {00:31:16.78} UT TRIGGER_SIGNIF: 5.2 [sigma] TRIGGER_DUR: 0.128 [sec] E_RANGE: 3-4 [chan] 47-291 [keV] ALGORITHM: 6 DETECTORS: 0,0,0, 0,0,0, 0,1,1, 0,0,0, 0,0, LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260928022/quicklook/glg_lc_medres34_bn260928022.gif COMMENTS: Fermi-GBM Trigger Alert. COMMENTS: This trigger occurred at longitude,latitude = 235.82,17.33 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Mon 28 Sep 26 00:31:46 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 46 TRIGGER_NUM: 812248281 GRB_RA: 318.517d {+21h 14m 04s} (J2000), 318.793d {+21h 15m 10s} (current), 318.000d {+21h 12m 00s} (1950) GRB_DEC: +33.933d {+33d 55' 60"} (J2000), +34.045d {+34d 02' 42"} (current), +33.726d {+33d 43' 32"} (1950) GRB_ERROR: 32.38 [deg radius, statistical plus systematic] GRB_INTEN: 301 [cnts/sec] DATA_SIGNIF: 5.20 [sigma] INTEG_TIME: 0.128 [sec] GRB_DATE: 21311 TJD; 271 DOY; 26/09/28 GRB_TIME: 1876.78 SOD {00:31:16.78} UT GRB_PHI: 231.00 [deg] GRB_THETA: 80.00 [deg] DATA_TIME_SCALE: 0.1280 [sec] HARD_RATIO: 0.41 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 85% GRB 2nd_MOST_LIKELY: 9% Cyg X-1 DETECTORS: 0,0,0, 0,0,0, 0,1,1, 0,0,0, 0,0, SUN_POSTN: 184.51d {+12h 18m 02s} -1.95d {-01d 57' 01"} SUN_DIST: 126.68 [deg] Sun_angle= -9.0 [hr] (East of Sun) MOON_POSTN: 18.55d {+01h 14m 13s} +12.20d {+12d 12' 02"} MOON_DIST: 58.25 [deg] MOON_ILLUM: 98 [%] GAL_COORDS: 79.71,-10.13 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 335.58, 46.95 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260928022/quicklook/glg_lc_medres34_bn260928022.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 235.82,17.33 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Mon 28 Sep 26 00:32:03 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 59 TRIGGER_NUM: 812248281 GRB_RA: 321.950d {+21h 27m 48s} (J2000), 322.224d {+21h 28m 54s} (current), 321.438d {+21h 25m 45s} (1950) GRB_DEC: +36.810d {+36d 48' 36"} (J2000), +36.927d {+36d 55' 39"} (current), +36.592d {+36d 35' 30"} (1950) GRB_ERROR: 12.54 [deg radius, statistical only] DATA_SIGNIF: 5.50 [sigma] DATA_INTERVAL: 0.128 [sec] GRB_DATE: 21311 TJD; 271 DOY; 26/09/28 GRB_TIME: 1876.78 SOD {00:31:16.78} UT GRB_PHI: 231.00 [deg] GRB_THETA: 84.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 4173 (Gnd S/W Version number) SUN_POSTN: 184.51d {+12h 18m 02s} -1.95d {-01d 57' 01"} SUN_DIST: 127.70 [deg] Sun_angle= -9.2 [hr] (East of Sun) MOON_POSTN: 18.55d {+01h 14m 13s} +12.20d {+12d 12' 06"} MOON_DIST: 55.93 [deg] MOON_ILLUM: 98 [%] GAL_COORDS: 83.79,-10.14 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 341.22, 48.25 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260928022/quicklook/glg_lc_medres34_bn260928022.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_812248281.fits COMMENTS: Fermi-GBM Ground-calculated Coordinates. COMMENTS: This Notice was ground-generated -- not flight-generated. COMMENTS: The LC_URL file will not be created/available until ~15 min after the trigger. COMMENTS: The POS_MAP_URL file will not be created/available until ~1.5 min after the notice. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Mon 28 Sep 26 00:40:37 UT NOTICE_TYPE: Fermi-GBM Final Position RECORD_NUM: 0 TRIGGER_NUM: 812248281 GRB_RA: 290.530d {+19h 22m 07s} (J2000), 290.853d {+19h 23m 25s} (current), 289.926d {+19h 19m 42s} (1950) GRB_DEC: +8.100d {+08d 05' 60"} (J2000), +8.153d {+08d 09' 09"} (current), +8.004d {+08d 00' 13"} (1950) GRB_ERROR: 9.83 [deg radius, statistical only] GRB_DATE: 21311 TJD; 271 DOY; 26/09/28 GRB_TIME: 1876.78 SOD {00:31:16.78} UT GRB_PHI: 238.00 [deg] GRB_THETA: 44.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 184.51d {+12h 18m 03s} -1.95d {-01d 57' 09"} SUN_DIST: 106.45 [deg] Sun_angle= -7.1 [hr] (East of Sun) MOON_POSTN: 18.63d {+01h 14m 32s} +12.24d {+12d 14' 14"} MOON_DIST: 86.13 [deg] MOON_ILLUM: 98 [%] GAL_COORDS: 43.65, -3.06 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 293.60, 29.87 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260928022/quicklook/glg_lc_medres34_bn260928022.gif LOC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260928022/quicklook/glg_locplot_all_bn260928022.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.