////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Thu 27 Aug 26 10:43:10 UT NOTICE_TYPE: Fermi-GBM Alert RECORD_NUM: 1 TRIGGER_NUM: 809520184 GRB_DATE: 21279 TJD; 239 DOY; 26/08/27 GRB_TIME: 38579.77 SOD {10:42:59.77} UT TRIGGER_SIGNIF: 5.1 [sigma] TRIGGER_DUR: 0.128 [sec] E_RANGE: 3-4 [chan] 47-291 [keV] ALGORITHM: 7 DETECTORS: 0,0,0, 1,1,0, 0,0,0, 0,0,0, 0,0, LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260827447/quicklook/glg_lc_medres34_bn260827447.gif COMMENTS: Fermi-GBM Trigger Alert. COMMENTS: This trigger occurred at longitude,latitude = 211.78,-25.43 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Thu 27 Aug 26 10:43:28 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 44 TRIGGER_NUM: 809520184 GRB_RA: 245.883d {+16h 23m 32s} (J2000), 246.416d {+16h 25m 40s} (current), 244.887d {+16h 19m 33s} (1950) GRB_DEC: -54.600d {-54d 36' 00"} (J2000), -54.660d {-54d 39' 35"} (current), -54.484d {-54d 29' 02"} (1950) GRB_ERROR: 5.63 [deg radius, statistical plus systematic] GRB_INTEN: 528 [cnts/sec] DATA_SIGNIF: 25.90 [sigma] INTEG_TIME: 1.024 [sec] GRB_DATE: 21279 TJD; 239 DOY; 26/08/27 GRB_TIME: 38579.77 SOD {10:42:59.77} UT GRB_PHI: 274.00 [deg] GRB_THETA: 40.00 [deg] DATA_TIME_SCALE: 1.0240 [sec] HARD_RATIO: 0.22 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 97% GRB 2nd_MOST_LIKELY: 1% Generic Transient DETECTORS: 0,0,0, 1,1,0, 0,0,0, 0,0,0, 0,0, SUN_POSTN: 156.07d {+10h 24m 17s} +9.97d {+09d 58' 19"} SUN_DIST: 98.32 [deg] Sun_angle= -6.0 [hr] (East of Sun) MOON_POSTN: 328.13d {+21h 52m 31s} -13.43d {-13d 25' 32"} MOON_DIST: 74.31 [deg] MOON_ILLUM: 99 [%] GAL_COORDS: 330.56, -3.53 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 253.70,-32.52 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260827447/quicklook/glg_lc_medres34_bn260827447.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 211.78,-25.43 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Thu 27 Aug 26 10:43:46 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 58 TRIGGER_NUM: 809520184 GRB_RA: 246.990d {+16h 27m 58s} (J2000), 247.524d {+16h 30m 06s} (current), 245.992d {+16h 23m 58s} (1950) GRB_DEC: -54.560d {-54d 33' 35"} (J2000), -54.617d {-54d 37' 02"} (current), -54.449d {-54d 26' 55"} (1950) GRB_ERROR: 3.43 [deg radius, statistical only] DATA_SIGNIF: 32.00 [sigma] DATA_INTERVAL: 2.048 [sec] GRB_DATE: 21279 TJD; 239 DOY; 26/08/27 GRB_TIME: 38579.77 SOD {10:42:59.77} UT GRB_PHI: 273.00 [deg] GRB_THETA: 40.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 4173 (Gnd S/W Version number) SUN_POSTN: 156.07d {+10h 24m 17s} +9.97d {+09d 58' 18"} SUN_DIST: 98.95 [deg] Sun_angle= -6.1 [hr] (East of Sun) MOON_POSTN: 328.13d {+21h 52m 32s} -13.42d {-13d 25' 28"} MOON_DIST: 73.67 [deg] MOON_ILLUM: 99 [%] GAL_COORDS: 331.03, -3.96 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 254.44,-32.36 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260827447/quicklook/glg_lc_medres34_bn260827447.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_809520184.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: Thu 27 Aug 26 10:44:57 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 1 TRIGGER_NUM: 809520184 GRB_RA: 247.920d {+16h 31m 41s} (J2000), 248.448d {+16h 33m 47s} (current), 246.933d {+16h 27m 44s} (1950) GRB_DEC: -53.490d {-53d 29' 23"} (J2000), -53.545d {-53d 32' 42"} (current), -53.383d {-53d 22' 58"} (1950) GRB_ERROR: 2.73 [deg radius, statistical only] DATA_SIGNIF: 29.50 [sigma] DATA_INTERVAL: 3.072 [sec] GRB_DATE: 21279 TJD; 239 DOY; 26/08/27 GRB_TIME: 38579.77 SOD {10:42:59.77} UT GRB_PHI: 272.00 [deg] GRB_THETA: 41.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 156.07d {+10h 24m 17s} +9.97d {+09d 58' 17"} SUN_DIST: 99.41 [deg] Sun_angle= -6.2 [hr] (East of Sun) MOON_POSTN: 328.14d {+21h 52m 34s} -13.42d {-13d 25' 12"} MOON_DIST: 73.14 [deg] MOON_ILLUM: 99 [%] GAL_COORDS: 332.19, -3.63 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 254.84,-31.21 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260827447/quicklook/glg_lc_medres34_bn260827447.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_809520184.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: Thu 27 Aug 26 10:53:15 UT NOTICE_TYPE: Fermi-GBM Final Position RECORD_NUM: 0 TRIGGER_NUM: 809520184 GRB_RA: 247.930d {+16h 31m 43s} (J2000), 248.458d {+16h 33m 50s} (current), 246.943d {+16h 27m 46s} (1950) GRB_DEC: -53.460d {-53d 27' 35"} (J2000), -53.515d {-53d 30' 53"} (current), -53.353d {-53d 21' 10"} (1950) GRB_ERROR: 2.39 [deg radius, statistical only] GRB_DATE: 21279 TJD; 239 DOY; 26/08/27 GRB_TIME: 38579.77 SOD {10:42:59.77} UT GRB_PHI: 272.00 [deg] GRB_THETA: 41.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 156.08d {+10h 24m 18s} +9.97d {+09d 58' 10"} SUN_DIST: 99.41 [deg] Sun_angle= -6.2 [hr] (East of Sun) MOON_POSTN: 328.21d {+21h 52m 51s} -13.39d {-13d 23' 21"} MOON_DIST: 73.20 [deg] MOON_ILLUM: 99 [%] GAL_COORDS: 332.21, -3.61 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 254.84,-31.18 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260827447/quicklook/glg_lc_medres34_bn260827447.gif LOC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260827447/quicklook/glg_locplot_all_bn260827447.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.