////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Sat 21 Feb 26 23:18:32 UT NOTICE_TYPE: Fermi-GBM Alert RECORD_NUM: 1 TRIGGER_NUM: 793408707 GRB_DATE: 21092 TJD; 52 DOY; 26/02/21 GRB_TIME: 83902.78 SOD {23:18:22.78} UT TRIGGER_SIGNIF: 4.9 [sigma] TRIGGER_DUR: 1.024 [sec] E_RANGE: 3-4 [chan] 47-291 [keV] ALGORITHM: 12 DETECTORS: 0,0,0, 0,0,0, 1,0,0, 1,0,0, 0,0, LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260221971/quicklook/glg_lc_medres34_bn260221971.gif COMMENTS: Fermi-GBM Trigger Alert. COMMENTS: This trigger occurred at longitude,latitude = 193.93,20.43 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Sat 21 Feb 26 23:18:51 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 45 TRIGGER_NUM: 793408707 GRB_RA: 341.617d {+22h 46m 28s} (J2000), 341.773d {+22h 47m 06s} (current), 341.317d {+22h 45m 16s} (1950) GRB_DEC: +75.567d {+75d 34' 00"} (J2000), +75.705d {+75d 42' 18"} (current), +75.303d {+75d 18' 10"} (1950) GRB_ERROR: 25.88 [deg radius, statistical plus systematic] GRB_INTEN: 73 [cnts/sec] DATA_SIGNIF: 4.90 [sigma] INTEG_TIME: 2.048 [sec] GRB_DATE: 21092 TJD; 52 DOY; 26/02/21 GRB_TIME: 83902.78 SOD {23:18:22.78} UT GRB_PHI: 120.00 [deg] GRB_THETA: 15.00 [deg] DATA_TIME_SCALE: 2.0480 [sec] HARD_RATIO: 0.54 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 90% GRB 2nd_MOST_LIKELY: 4% Generic Transient DETECTORS: 0,0,0, 0,0,0, 1,0,0, 1,0,0, 0,0, SUN_POSTN: 335.27d {+22h 21m 04s} -10.28d {-10d 16' 45"} SUN_DIST: 86.07 [deg] Sun_angle= -0.4 [hr] (East of Sun) MOON_POSTN: 26.27d {+01h 45m 05s} +15.24d {+15d 14' 20"} MOON_DIST: 64.87 [deg] MOON_ILLUM: 23 [%] GAL_COORDS: 115.25, 14.59 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 52.93, 66.90 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260221971/quicklook/glg_lc_medres34_bn260221971.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 193.93,20.43 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Sat 21 Feb 26 23:19:09 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 57 TRIGGER_NUM: 793408707 GRB_RA: 328.770d {+21h 55m 05s} (J2000), 328.822d {+21h 55m 17s} (current), 328.665d {+21h 54m 40s} (1950) GRB_DEC: +75.010d {+75d 00' 36"} (J2000), +75.134d {+75d 08' 04"} (current), +74.772d {+74d 46' 19"} (1950) GRB_ERROR: 13.77 [deg radius, statistical only] DATA_SIGNIF: 6.10 [sigma] DATA_INTERVAL: 2.048 [sec] GRB_DATE: 21092 TJD; 52 DOY; 26/02/21 GRB_TIME: 83902.78 SOD {23:18:22.78} UT GRB_PHI: 126.00 [deg] GRB_THETA: 12.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 4173 (Gnd S/W Version number) SUN_POSTN: 335.27d {+22h 21m 04s} -10.28d {-10d 16' 45"} SUN_DIST: 85.51 [deg] Sun_angle= 0.4 [hr] (West of Sun) MOON_POSTN: 26.28d {+01h 45m 06s} +15.24d {+15d 14' 24"} MOON_DIST: 67.22 [deg] MOON_ILLUM: 23 [%] GAL_COORDS: 112.14, 15.97 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 49.74, 69.99 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260221971/quicklook/glg_lc_medres34_bn260221971.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_793408707.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: Sat 21 Feb 26 23:20:18 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 0 TRIGGER_NUM: 793408707 GRB_RA: 276.830d {+18h 27m 19s} (J2000), 276.859d {+18h 27m 26s} (current), 276.775d {+18h 27m 06s} (1950) GRB_DEC: +64.730d {+64d 43' 48"} (J2000), +64.747d {+64d 44' 50"} (current), +64.697d {+64d 41' 49"} (1950) GRB_ERROR: 6.86 [deg radius, statistical only] DATA_SIGNIF: 5.60 [sigma] DATA_INTERVAL: 6.144 [sec] GRB_DATE: 21092 TJD; 52 DOY; 26/02/21 GRB_TIME: 83902.78 SOD {23:18:22.78} UT GRB_PHI: 230.00 [deg] GRB_THETA: 13.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 335.27d {+22h 21m 04s} -10.28d {-10d 16' 44"} SUN_DIST: 86.65 [deg] Sun_angle= 3.9 [hr] (West of Sun) MOON_POSTN: 26.29d {+01h 45m 09s} +15.24d {+15d 14' 41"} MOON_DIST: 84.21 [deg] MOON_ILLUM: 23 [%] GAL_COORDS: 94.51, 26.89 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 330.12, 86.64 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260221971/quicklook/glg_lc_medres34_bn260221971.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_793408707.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: Sat 21 Feb 26 23:27:50 UT NOTICE_TYPE: Fermi-GBM Final Position RECORD_NUM: 0 TRIGGER_NUM: 793408707 GRB_RA: 328.390d {+21h 53m 34s} (J2000), 328.439d {+21h 53m 45s} (current), 328.291d {+21h 53m 10s} (1950) GRB_DEC: +75.010d {+75d 00' 36"} (J2000), +75.134d {+75d 08' 02"} (current), +74.773d {+74d 46' 23"} (1950) GRB_ERROR: 8.37 [deg radius, statistical only] GRB_DATE: 21092 TJD; 52 DOY; 26/02/21 GRB_TIME: 83902.78 SOD {23:18:22.78} UT GRB_PHI: 126.00 [deg] GRB_THETA: 12.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 335.27d {+22h 21m 05s} -10.28d {-10d 16' 37"} SUN_DIST: 85.51 [deg] Sun_angle= 0.5 [hr] (West of Sun) MOON_POSTN: 26.36d {+01h 45m 25s} +15.28d {+15d 16' 30"} MOON_DIST: 67.29 [deg] MOON_ILLUM: 23 [%] GAL_COORDS: 112.07, 16.03 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 49.71, 70.08 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260221971/quicklook/glg_lc_medres34_bn260221971.gif LOC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260221971/quicklook/glg_locplot_all_bn260221971.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 Short GRB.