////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Wed 23 Sep 26 23:41:41 UT NOTICE_TYPE: Fermi-GBM Alert RECORD_NUM: 1 TRIGGER_NUM: 811899701 GRB_DATE: 21306 TJD; 266 DOY; 26/09/23 GRB_TIME: 85296.43 SOD {23:41:36.43} UT TRIGGER_SIGNIF: 5.2 [sigma] TRIGGER_DUR: 2.048 [sec] E_RANGE: 3-4 [chan] 47-291 [keV] ALGORITHM: 14 DETECTORS: 0,0,0, 1,0,0, 1,0,0, 0,0,0, 0,0, LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260923987/quicklook/glg_lc_medres34_bn260923987.gif COMMENTS: Fermi-GBM Trigger Alert. COMMENTS: This trigger occurred at longitude,latitude = 55.47,1.88 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Wed 23 Sep 26 23:41:55 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 45 TRIGGER_NUM: 811899701 GRB_RA: 1.533d {+00h 06m 08s} (J2000), 1.870d {+00h 07m 29s} (current), 0.900d {+00h 03m 36s} (1950) GRB_DEC: -51.500d {-51d 30' 00"} (J2000), -51.351d {-51d 21' 04"} (current), -51.778d {-51d 46' 41"} (1950) GRB_ERROR: 20.70 [deg radius, statistical plus systematic] GRB_INTEN: 65 [cnts/sec] DATA_SIGNIF: 5.10 [sigma] INTEG_TIME: 2.048 [sec] GRB_DATE: 21306 TJD; 266 DOY; 26/09/23 GRB_TIME: 85296.43 SOD {23:41:36.43} UT GRB_PHI: 270.00 [deg] GRB_THETA: 20.00 [deg] DATA_TIME_SCALE: 2.0480 [sec] HARD_RATIO: 0.47 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 95% GRB 2nd_MOST_LIKELY: 4% Generic Transient DETECTORS: 0,0,0, 1,0,0, 1,0,0, 0,0,0, 0,0, SUN_POSTN: 180.88d {+12h 03m 30s} -0.38d {-00d 22' 46"} SUN_DIST: 128.26 [deg] Sun_angle= 11.9 [hr] (West of Sun) MOON_POSTN: 330.29d {+22h 01m 09s} -12.37d {-12d 22' 16"} MOON_DIST: 46.61 [deg] MOON_ILLUM: 92 [%] GAL_COORDS: 319.23,-64.17 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 334.56,-46.44 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260923987/quicklook/glg_lc_medres34_bn260923987.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 55.47,1.88 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Wed 23 Sep 26 23:42:05 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 58 TRIGGER_NUM: 811899701 GRB_RA: 345.583d {+23h 02m 20s} (J2000), 345.975d {+23h 03m 54s} (current), 344.846d {+22h 59m 23s} (1950) GRB_DEC: -53.700d {-53d 42' 00"} (J2000), -53.556d {-53d 33' 20"} (current), -53.969d {-53d 58' 08"} (1950) GRB_ERROR: 7.42 [deg radius, statistical plus systematic] GRB_INTEN: 180 [cnts/sec] DATA_SIGNIF: 19.30 [sigma] INTEG_TIME: 4.096 [sec] GRB_DATE: 21306 TJD; 266 DOY; 26/09/23 GRB_TIME: 85296.43 SOD {23:41:36.43} UT GRB_PHI: 270.00 [deg] GRB_THETA: 30.00 [deg] DATA_TIME_SCALE: 4.0960 [sec] HARD_RATIO: 0.54 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 95% GRB 2nd_MOST_LIKELY: 4% Generic Transient DETECTORS: 0,0,0, 1,0,0, 1,0,0, 0,0,0, 0,0, SUN_POSTN: 180.88d {+12h 03m 30s} -0.38d {-00d 22' 46"} SUN_DIST: 124.66 [deg] Sun_angle= -11.0 [hr] (East of Sun) MOON_POSTN: 330.29d {+22h 01m 09s} -12.37d {-12d 22' 14"} MOON_DIST: 43.03 [deg] MOON_ILLUM: 92 [%] GAL_COORDS: 332.54,-56.70 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 321.52,-42.91 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260923987/quicklook/glg_lc_medres34_bn260923987.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 55.47,1.88 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Wed 23 Sep 26 23:42:14 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 57 TRIGGER_NUM: 811899701 GRB_RA: 342.100d {+22h 48m 24s} (J2000), 342.503d {+22h 50m 01s} (current), 341.342d {+22h 45m 22s} (1950) GRB_DEC: -53.140d {-53d 08' 23"} (J2000), -52.998d {-52d 59' 53"} (current), -53.404d {-53d 24' 15"} (1950) GRB_ERROR: 1.93 [deg radius, statistical only] DATA_SIGNIF: 12.40 [sigma] DATA_INTERVAL: 4.096 [sec] GRB_DATE: 21306 TJD; 266 DOY; 26/09/23 GRB_TIME: 85296.43 SOD {23:41:36.43} UT GRB_PHI: 269.00 [deg] GRB_THETA: 32.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 4173 (Gnd S/W Version number) SUN_POSTN: 180.88d {+12h 03m 30s} -0.38d {-00d 22' 47"} SUN_DIST: 124.46 [deg] Sun_angle= -10.8 [hr] (East of Sun) MOON_POSTN: 330.29d {+22h 01m 10s} -12.37d {-12d 22' 12"} MOON_DIST: 41.79 [deg] MOON_ILLUM: 92 [%] GAL_COORDS: 335.68,-55.45 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 319.51,-41.36 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260923987/quicklook/glg_lc_medres34_bn260923987.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_811899701.fits COMMENTS: Fermi-GBM Ground-calculated Coordinates. COMMENTS: In the LAT Field-of-view. 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: Wed 23 Sep 26 23:42:28 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 88 TRIGGER_NUM: 811899701 GRB_RA: 2.617d {+00h 10m 28s} (J2000), 2.950d {+00h 11m 48s} (current), 1.991d {+00h 07m 58s} (1950) GRB_DEC: -52.483d {-52d 28' 59"} (J2000), -52.335d {-52d 20' 04"} (current), -52.761d {-52d 45' 40"} (1950) GRB_ERROR: 6.40 [deg radius, statistical plus systematic] GRB_INTEN: 262 [cnts/sec] DATA_SIGNIF: 28.30 [sigma] INTEG_TIME: 4.096 [sec] GRB_DATE: 21306 TJD; 266 DOY; 26/09/23 GRB_TIME: 85296.43 SOD {23:41:36.43} UT GRB_PHI: 270.00 [deg] GRB_THETA: 20.00 [deg] DATA_TIME_SCALE: 4.0960 [sec] HARD_RATIO: 0.56 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 95% GRB 2nd_MOST_LIKELY: 4% Generic Transient DETECTORS: 0,0,0, 1,0,0, 1,0,0, 0,0,0, 0,0, SUN_POSTN: 180.88d {+12h 03m 30s} -0.38d {-00d 22' 47"} SUN_DIST: 127.26 [deg] Sun_angle= 11.9 [hr] (West of Sun) MOON_POSTN: 330.29d {+22h 01m 10s} -12.37d {-12d 22' 09"} MOON_DIST: 47.77 [deg] MOON_ILLUM: 92 [%] GAL_COORDS: 316.98,-63.51 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 334.51,-47.63 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260923987/quicklook/glg_lc_medres34_bn260923987.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 55.47,1.88 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Wed 23 Sep 26 23:43:17 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 2 TRIGGER_NUM: 811899701 GRB_RA: 345.610d {+23h 02m 26s} (J2000), 346.003d {+23h 04m 01s} (current), 344.870d {+22h 59m 29s} (1950) GRB_DEC: -54.490d {-54d 29' 23"} (J2000), -54.346d {-54d 20' 44"} (current), -54.759d {-54d 45' 32"} (1950) GRB_ERROR: 1.59 [deg radius, statistical only] DATA_SIGNIF: 23.20 [sigma] DATA_INTERVAL: 14.336 [sec] GRB_DATE: 21306 TJD; 266 DOY; 26/09/23 GRB_TIME: 85296.43 SOD {23:41:36.43} UT GRB_PHI: 272.00 [deg] GRB_THETA: 30.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 180.88d {+12h 03m 31s} -0.38d {-00d 22' 48"} SUN_DIST: 123.91 [deg] Sun_angle= -11.0 [hr] (East of Sun) MOON_POSTN: 330.30d {+22h 01m 12s} -12.37d {-12d 21' 58"} MOON_DIST: 43.77 [deg] MOON_ILLUM: 92 [%] GAL_COORDS: 331.47,-56.18 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 320.96,-43.58 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260923987/quicklook/glg_lc_medres34_bn260923987.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_811899701.fits COMMENTS: Fermi-GBM Ground-calculated Coordinates. COMMENTS: In the LAT Field-of-view. COMMENTS: This is likely a Long GRB. 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: Wed 23 Sep 26 23:43:26 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 3 TRIGGER_NUM: 811899701 GRB_RA: 343.830d {+22h 55m 19s} (J2000), 344.228d {+22h 56m 55s} (current), 343.081d {+22h 52m 19s} (1950) GRB_DEC: -53.660d {-53d 39' 35"} (J2000), -53.517d {-53d 31' 00"} (current), -53.927d {-53d 55' 36"} (1950) GRB_ERROR: 1.28 [deg radius, statistical only] DATA_SIGNIF: 31.30 [sigma] DATA_INTERVAL: 19.456 [sec] GRB_DATE: 21306 TJD; 266 DOY; 26/09/23 GRB_TIME: 85296.43 SOD {23:41:36.43} UT GRB_PHI: 270.00 [deg] GRB_THETA: 31.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 180.88d {+12h 03m 31s} -0.38d {-00d 22' 48"} SUN_DIST: 124.35 [deg] Sun_angle= -10.9 [hr] (East of Sun) MOON_POSTN: 330.30d {+22h 01m 12s} -12.37d {-12d 21' 56"} MOON_DIST: 42.62 [deg] MOON_ILLUM: 92 [%] GAL_COORDS: 333.82,-55.94 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 320.34,-42.33 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260923987/quicklook/glg_lc_medres34_bn260923987.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_811899701.fits COMMENTS: Fermi-GBM Ground-calculated Coordinates. COMMENTS: In the LAT Field-of-view. COMMENTS: This is likely a Long GRB. 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: Wed 23 Sep 26 23:50:58 UT NOTICE_TYPE: Fermi-GBM Final Position RECORD_NUM: 0 TRIGGER_NUM: 811899701 GRB_RA: 345.850d {+23h 03m 24s} (J2000), 346.242d {+23h 04m 58s} (current), 345.113d {+23h 00m 27s} (1950) GRB_DEC: -54.090d {-54d 05' 23"} (J2000), -53.946d {-53d 56' 43"} (current), -54.360d {-54d 21' 33"} (1950) GRB_ERROR: 2.06 [deg radius, statistical only] GRB_DATE: 21306 TJD; 266 DOY; 26/09/23 GRB_TIME: 85296.43 SOD {23:41:36.43} UT GRB_PHI: 270.00 [deg] GRB_THETA: 30.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 180.88d {+12h 03m 32s} -0.38d {-00d 22' 55"} SUN_DIST: 124.34 [deg] Sun_angle= -11.0 [hr] (East of Sun) MOON_POSTN: 330.36d {+22h 01m 27s} -12.34d {-12d 20' 13"} MOON_DIST: 43.47 [deg] MOON_ILLUM: 92 [%] GAL_COORDS: 331.83,-56.55 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 321.42,-43.32 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260923987/quicklook/glg_lc_medres34_bn260923987.gif LOC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260923987/quicklook/glg_locplot_all_bn260923987.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: In the LAT Field-of-view. COMMENTS: This is likely a Long GRB.