////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Mon 31 Aug 26 04:09:06 UT NOTICE_TYPE: Fermi-GBM Alert RECORD_NUM: 1 TRIGGER_NUM: 809842145 GRB_DATE: 21283 TJD; 243 DOY; 26/08/31 GRB_TIME: 14940.93 SOD {04:09:00.93} UT TRIGGER_SIGNIF: 4.7 [sigma] TRIGGER_DUR: 0.256 [sec] E_RANGE: 3-4 [chan] 47-291 [keV] ALGORITHM: 8 DETECTORS: 0,1,1, 0,0,0, 0,0,0, 0,0,0, 0,0, LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260831173/quicklook/glg_lc_medres34_bn260831173.gif COMMENTS: Fermi-GBM Trigger Alert. COMMENTS: This trigger occurred at longitude,latitude = 250.23,-24.05 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Mon 31 Aug 26 04:09:29 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 47 TRIGGER_NUM: 809842145 GRB_RA: 213.733d {+14h 14m 56s} (J2000), 214.087d {+14h 16m 21s} (current), 213.072d {+14h 12m 17s} (1950) GRB_DEC: -8.000d {-08d 00' 00"} (J2000), -8.123d {-08d 07' 22"} (current), -7.768d {-07d 46' 02"} (1950) GRB_ERROR: 14.35 [deg radius, statistical plus systematic] GRB_INTEN: 155 [cnts/sec] DATA_SIGNIF: 8.90 [sigma] INTEG_TIME: 2.048 [sec] GRB_DATE: 21283 TJD; 243 DOY; 26/08/31 GRB_TIME: 14940.93 SOD {04:09:00.93} UT GRB_PHI: 45.00 [deg] GRB_THETA: 90.00 [deg] DATA_TIME_SCALE: 2.0480 [sec] HARD_RATIO: 0.85 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 97% GRB 2nd_MOST_LIKELY: 1% Generic Transient DETECTORS: 0,1,1, 0,0,0, 0,0,0, 0,0,0, 0,0, SUN_POSTN: 159.46d {+10h 37m 51s} +8.65d {+08d 38' 48"} SUN_DIST: 56.95 [deg] Sun_angle= -3.6 [hr] (East of Sun) MOON_POSTN: 11.71d {+00h 46m 50s} +8.99d {+08d 59' 36"} MOON_DIST: 157.86 [deg] MOON_ILLUM: 90 [%] GAL_COORDS: 335.81, 49.47 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 214.21, 5.22 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260831173/quicklook/glg_lc_medres34_bn260831173.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 250.23,-24.05 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Mon 31 Aug 26 04:09:47 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 57 TRIGGER_NUM: 809842145 GRB_RA: 219.250d {+14h 37m 00s} (J2000), 219.601d {+14h 38m 24s} (current), 218.594d {+14h 34m 22s} (1950) GRB_DEC: -5.320d {-05d 19' 11"} (J2000), -5.435d {-05d 26' 04"} (current), -5.103d {-05d 06' 11"} (1950) GRB_ERROR: 6.76 [deg radius, statistical only] DATA_SIGNIF: 13.40 [sigma] DATA_INTERVAL: 4.096 [sec] GRB_DATE: 21283 TJD; 243 DOY; 26/08/31 GRB_TIME: 14940.93 SOD {04:09:00.93} UT GRB_PHI: 45.00 [deg] GRB_THETA: 84.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 4173 (Gnd S/W Version number) SUN_POSTN: 159.46d {+10h 37m 51s} +8.65d {+08d 38' 48"} SUN_DIST: 61.59 [deg] Sun_angle= -4.0 [hr] (East of Sun) MOON_POSTN: 11.71d {+00h 46m 50s} +8.99d {+08d 59' 40"} MOON_DIST: 152.11 [deg] MOON_ILLUM: 90 [%] GAL_COORDS: 345.07, 48.72 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 218.57, 9.53 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260831173/quicklook/glg_lc_medres34_bn260831173.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_809842145.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 31 Aug 26 04:16:09 UT NOTICE_TYPE: Fermi-GBM Final Position RECORD_NUM: 0 TRIGGER_NUM: 809842145 GRB_RA: 220.040d {+14h 40m 10s} (J2000), 220.394d {+14h 41m 35s} (current), 219.377d {+14h 37m 31s} (1950) GRB_DEC: -7.200d {-07d 12' 00"} (J2000), -7.313d {-07d 18' 47"} (current), -6.986d {-06d 59' 08"} (1950) GRB_ERROR: 6.52 [deg radius, statistical only] GRB_DATE: 21283 TJD; 243 DOY; 26/08/31 GRB_TIME: 14940.93 SOD {04:09:00.93} UT GRB_PHI: 47.00 [deg] GRB_THETA: 84.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 159.47d {+10h 37m 52s} +8.64d {+08d 38' 42"} SUN_DIST: 62.78 [deg] Sun_angle= -4.1 [hr] (East of Sun) MOON_POSTN: 11.76d {+00h 47m 03s} +9.02d {+09d 01' 17"} MOON_DIST: 151.62 [deg] MOON_ILLUM: 90 [%] GAL_COORDS: 344.34, 46.75 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 219.92, 7.98 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260831173/quicklook/glg_lc_medres34_bn260831173.gif LOC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260831173/quicklook/glg_locplot_all_bn260831173.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 Long GRB.