GRB Time [UT] Trigger Number BAT RA (J2000) BAT Dec (J2000) BAT T90 [sec] BAT Fluence (15-150 keV) [10^-7 erg/cm^2] XRT RA (J2000) XRT Dec (J2000) XRT Time to First Observation [sec] XRT Early Flux (0.3-10 keV) [10^-11 erg/cm^2/s] UVOT RA (J2000) UVOT Dec (J2000) UVOT Time to First Observation [sec] UVOT Magnitude Other Observatory Detections Redshift Host Galaxy Comments References 260208A 05:07:28 Fermi 204.4 33.0 n/a n/a 13:38:55.56 33:48:04.0 35100 n/a n/a n/a 35400 V=20.01 Fermi: GCN 43635|XRT: cannot presently determine if the source is fading XRT: GCN 43652|UVOT: GCN 43702 260204A 14:48:49 SVOM 205.1185 2.0200 n/a n/a 13:40:25.49 01:55:50.7 23000 n/a n/a n/a 23622 n/a SVOM: GCN 43613|UVOT: no detection XRT: GCN 43622; GCN 43678; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 43669 260127A 17:50:34 1444088 231.879 6.758 104.06 23 15:27:31.02 06:45:45.3 205.29 45.8 n/a n/a 213 n/a Fermi (GBM), LCO (1m), SVOM/C-GFT, MITSuME (50cm), NOT, COLIBRÍ, SAO RAS/Zeiss-1000, GECAM-B BAT: GCN 43529; GCN 43563|XRT: GCN 43529; GCN 43532; GCN 43535; GCN 43539; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 43529 260122B 23:13:10 1443066 336.096 -59.176 16.59 10 n/a n/a n/a n/a n/a n/a n/a n/a Due to a Sun observing constraint, Swift cannot slew to the BAT position until 2026 February 16. There will thus be no XRT or UVOT data for this trigger. BAT: GCN 43502; GCN 43507 260120B 18:00:26 1442454 284.701 61.905 4.48 12 18:58:38.34 61:54:18.3 145.48 n/a n/a n/a 149 V>17.4 Fermi (GBM), SVOM (C-GFT & GRM), AstroSat CZTI, Konus-Wind BAT: GCN 43479; GCN 43493|XRT: GCN 43479; GCN 43484; GCN 43492; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 43479; GCN 43487 260117A 19:43:25 SVOM 188.1895 43.8927 n/a n/a 12:32:33.27 43:54:45.9 12500 n/a n/a n/a n/a n/a SVOM: GCN 43437 XRT: GCN 43439; GCN 43456; Evans et al., 2009, MNRAS, 397, 1177 260114A 11:40:26 1440319 74.602 -7.994 n/a n/a 04:58:23.49 -08:00:51.9 122.20 n/a n/a n/a 164 V>18.44 Fermi (GBM), GMG (2.4m), Mondy AZT-33IK (1.5m), GECAM-B, Konus-Wind, Insight-HXMT/HE 0.524 (VLT: emission from putative host) r~21.1 AB mag (VLT) UVOT: no detection BAT: GCN 43396|XRT: GCN 43396; GCN 43412; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 43396; GCN 43473|Redshift: GCN 43410 (VLT); GCN 43429 (VLT)|Host: GCN 43410 (VLT); GCN 43429 (VLT) 260111A 16:33:14.01 BAT/GUANO 229.57340 51.97470 n/a n/a 15:18:20.60 51:58:24.8 94300 n/a n/a n/a n/a n/a Fermi (GMB), GECAM-B, COLIBRÍ Initially detected by Fermi: GCN 43370|XRT: A source consistent with the position of XRT source 2 has been reported in the optical with COLIBRÍ, suggesting it could be the GRB afterglow. BAT: GCN 43377|XRT: GCN 43388 260104A 05:37:02 1430212 337.395 -21.291 13.26 3.5 22:29:35.81 -21:17:43.9 86.09 n/a n/a n/a 90 n/a BAT: GCN 43315; GCN 43355|XRT: GCN 43315; GCN 43319; GCN 43320; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 43315 260102A 04:10:03 SVOM 183.8803 48.2583 n/a n/a 12:15:47.82 48:15:02.1 9600 n/a n/a n/a n/a n/a SVOM: GCN 43295 XRT: GCN 43304; GCN 43357; Evans et al., 2009, MNRAS, 397, 1177 260101A 00:56:30 1429608 86.442 63.583 48.00 45 05:45:42.93 63:35:32.5 84.66 n/a 05:45:42.96 63:35:32.1 144 V=16.17 Fermi (GBM), LCO (1m), GTC, SVOM/GRM, NOT, GECAM-B, COLIBRÍ, Konus-Wind, 239Alferov CubeSat 2.623 (GTC: absorption)|2.623 (NOT: absorption) BAT: GCN 43285; GCN 43354|XRT: GCN 43285; GCN 43289; GCN 43291; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 43285; GCN 43318|Redshift: GCN 43287 (GTC); GCN 43293 (NOT) 251230A 01:21:41 1429020 179.894 11.415 n/a n/a 11:59:35.37 11:26:17.9 68.12 473 11:59:35.41 11:26:19.2 76 V=14.69 Las Cumbres (1m), FTW, Einstein Probe, Virtual Telescope Project (17"), LCO (1m), SVOM/VT, NOT, GRANDMA/TAROT, Insight-HXMT/HE, GECAM-B, MASTER-SAAO BAT: GCN 43252|XRT: GCN 43252; GCN 43263; GCN 43275; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 43252; GCN 43271|Redshift: GCN 43259 (NOT) 251222A 17:05:46 SVOM 77.2146 -7.2161 n/a n/a 05:08:46.81 -07:12:48.7 10700 n/a n/a n/a n/a n/a SVOM: GCN 43188 XRT: GCN 43213; Evans et al., 2009, MNRAS, 397, 1177 251221A 05:24:31 1426088 101.422 0.738 56.86 20 06:45:42.64 00:43:56.2 138.41 n/a n/a n/a 143 V>19.6 Fermi (GBM), COLIBRÍ, PRIME UVOT: no detection BAT: GCN 43166; GCN 43234|XRT: GCN 43166; GCN 43175; GCN 43179; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 43166; GCN 43177 251215A 04:21:21 Fermi 112.8 -43.7 n/a n/a 08:10:28.54 -36:44:33.6 32000 n/a n/a n/a 32000 n/a Fermi: GCN 43104|BAT/GUANO: GCN GCN 43114|UVOT: no detection XRT: GCN 43137; GCN 43155; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 43145 251214B 09:02:17 1423875 330.222 -9.155 9.38 5.0 22:00:50.54 -09:09:46.5 60.68 n/a 22:00:50.53 -09:09:46.4 64 V=17.09 Fermi (GBM), SVOM/C-GFT, MASTER-Tunka, Xinglong (2.16m), DFOT (1.3m), COLIBRÍ, GECAM-B, LCO (1m), AbAO. VLT, Mephisto (1.6m) BAT: GCN 43089; GCN 43129|XRT: GCN 43089; GCN 43098; GCN 43112; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 43089; GCN 43105 251208B 10:17:17 Fermi 212.3 30.1 n/a n/a 15:13:55.46 29:02:44.7 33100 n/a n/a n/a n/a n/a Fermi: GCN 43028 XRT: GCN 43050; Evans et al., 2009, MNRAS, 397, 1177 251205A 23:39:47 1420873 200.260 29.906 128.00 11 13:21:05.26 29:55:44.2 139.84 144 13:21:05.34 29:55:44.0 149 V=17.10 MASTER-Kislovodsk, GTC, NOT, GOTO, COLIBRÍ, Koshka/Zeiss-1000, Liverpool (2m), GIT (0.7m), ZTF, ATLAS, FTW, MITSuME (50cm), Palomar (1m), Fermi (GBM), Kilonova-Catcher 1.100 (GTC: absorption) BAT: GCN 43005; GCN 43018|XRT: GCN 43005; GCN 43007; GCN 43017; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 43005; GCN 43016|Redshift: GCN 53008 (GTC) 251202A 01:50:52 Fermi 120.3 43.5 n/a n/a 08:08:27.40 40:36:45.6 2400 n/a 08:08:27.5 40:36:45.3 17500 n/a Fermi: GCN 42933 XRT: GCN 42943; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42956 251201B 16:26:30 1418729 6.409 -44.237 n/a n/a 00:25:34.67 -44:14:01.1 93.44 863 00:25:34.59 -44:14:01.1 101 V=15.97 LCO (1m), MASTER-SAAO, SVOM/VT, Kilonova-Catcher, Fermi (GBM), Insight-HXMT/HE, SALT (9.2m) 1.599 (SALT: absorption) BAT: GCN 42924|XRT: GCN 42924; GCN 42927; GCN 42936; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42924; GCN 42954|Redshift: GCN 42994 (SALT) 251129A 02:32:05 SVOM 224.5380 79.4287 n/a n/a 14:57:19.38 79:17:35.2 16500 n/a n/a n/a 16800 n/a SVOM: GCN 42877 XRT: GCN 42891; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42959 251126A 19:10:36 1417793 99.939 54.989 9.00 4.4 06:39:46.39 54:59:10.6 81.66 n/a n/a n/a 86 V=18.7 GIT (70cm), Nanshan/HMT (0.5m), Asiago, Kilonova-Catcher, COLIBRÍ, LCO (1m), DFOT (1.3m), NOT, MITSuME (50cm), Mondy/AZT-33IK, SAO/Zeiss-1000, MAO/AZT-22, NUTTelA-TAO, OHP/T193, SVOM/VT 3.52 (COLIBRÍ: photometric)|~3.6 (OHP/T193: tentative) BAT: GCN 42843; GCN 42876|XRT: GCN 42843; GCN 42845; GCN 42851; GCN 42860; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42863|Redshift: GCN 42855 (COLIBRÍ); GCN 42871 (OHP/T193) 251118A 20:31:30 Fermi 160.4 -36.5 n/a n/a 10:40:00.99 -34:31:21.3 31300 n/a 10:40:01.01 -34:31:21.1 31300 V=18.60 Fermi: GCN 42743|BAT/GUANO: GCN 42770 XRT: GCN 42782; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42786 251116C 15:57:41 SVOM 335.3182 -10.4239 n/a n/a 22:21:22.58 -10:20:45.2 10000 n/a n/a n/a n/a n/a SVOM: GCN 42703|BAT: Swift/BAT did not localize GRB 251116C onboard (335.3327, -10.3401) BAT: GCN 42726|XRT: GCN 42721; GCN 42815 251112A 21:28:56 1413695 274.081 24.158 55.42 7.6 18:16:16.72 24:09:12.5 86.9 n/a n/a n/a 304 n/a UVOT: no detection BAT: GCN 42656; GCN 42686|XRT: GCN 42656; GCN 42665|UVOT: GCN 42656; GCN 42667 251111A 05:10:18 SVOM 32.3783 5.2567 n/a n/a 02:09:26.80 05:13:41.3 7400 n/a n/a n/a n/a n/a SVOM: GCN 42637 XRT: GCN 42645; GCN 42648 251106A 19:56:37 SVOM 234.4744 63.3387 n/a n/a 15:37:51.02 63:22:04.0 4000 n/a n/a n/a 4100 n/a SVOM: GCN 42605|BAT: Swift/BAT did not localize GRB 251106A onboard. In a ground search of a 10 s event file, available due to a subthreshold trigger onboard, the GRB was detected.|UVOT: no detection BAT: GCN 42608|XRT: GCN 42611; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42635 251103B 16:46:36 1409824 105.870 -24.871 127.86 35 07:03:29.59 -24:52:19.7 72.93 278 n/a n/a 140 V>19.0 Fermi (GBM), AstroSat CZTI BAT: GCN 42556; GCN 42636|XRT: GCN 42556; GCN 42557; GCN 42558; GCN 42566; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42556; GCN 42588 251103A 04:46:21 SVOM 146.8375 16.1296 n/a n/a 09:47:21.33 16:07:24.6 4800 n/a n/a n/a 4797 n/a SVOM: GCN 42534 XRT: GCN 42551; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42554 251025B 14:24:05 SVOM 29.5647 30.2424 n/a n/a 01:58:07.46 30:18:13.4 2800 n/a n/a n/a 6600 n/a SVOM: GCN 42437|UVOT: no detection XRT: GCN 42445; GCN 42493; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42488 251024A 17:47:02.25 1406589 306.666 -68.576 82.66 6.5 20:26:23.48 -68:34:20.6 129.10 n/a n/a n/a 132 V>18.0 LCOGT (1m) UVOT: no detection BAT: GCN 42426; GCN 42444|XRT: GCN 42426; GCN 42430; GCN 42442; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42426; GCN 42446 251022A 22:34:15 Fermi 74.5 -22.7 n/a n/a 04:21:59.36 -18:55:11.0 25700 n/a n/a n/a n/a n/a Fermi: GCN 42380|BAT: GUANO BAT: GCN 42409|XRT: GCN 42417; GCN 42518; Evans et al., 2009, MNRAS, 397, 1177 251018A 03:12:02 1405083 282.071 -37.028 n/a n/a 18:48:10.14 -37:01:45.2 74.39 51.9 18:48:10.04 -37:01:42.2 84 n/a Fermi (GBM), TRT (0.7m), MASTER-OAFA, BOOTES-5 (0.6m), BOOTES-7 (0.6m) BAT: GCN 42343|XRT: GCN 42343; GCN 42361; GCN 42362; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42343; GCN 42353 251017A 08:40:44 1404904 335.404 7.048 116.90 12 22:21:36.32 07:02:24.3 109.53 203 22:21:36.24 07:02:23.6 98 V>18.8 BOOTES-5/JG, COLIBRÍ, MITSuME (50cm), JinShan, Glowbug, Palomar (1m), OHP/T193, SVOM (VT), VLT, Belesta Observatory (820mm), INASAN-Kislovodsk, Mondy AZT-33IK (1.5m), Koshka Zeiss-1000 (1m) 4.34 (COLIBRÍ: photometric)|4.327 (VLT: absorption) BAT: GCN 42322; GCN 42366|XRT: GCN 42322; GCN 42326; GCN 42347; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42322; GCN 42355|Redshift: GCN 42348 (COLIBRÍ); GCN 42350 (VLT) 251016A 14:59:19 SVOM 266.207 -39.577 n/a n/a 17:45:12.67 -39:33:36.3 6600 n/a n/a n/a 6660 V=17.52 SVOM: GCN 42308 XRT: GCN 42311; GCN 42356; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42354 251014D 21:54:40.55 1404126 323.933 -41.873 286.98 10 21:35:40.99 -41:51:19.2 155.7 n/a n/a n/a 160 V>19.2 UVOT: no detection BAT: GCN 42274; GCN 42315|XRT: GCN 42274; GCN 42284; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42274; GCN 42286 251014A 00:28:30 1403878 111.728 6.420 1.56 2.3 n/a n/a n/a n/a n/a n/a n/a n/a Fermi (GBM), Glowbug Due to a Moon observing constraint, Swift cannot slew to the BAT position until 21:52 UT on 2025 October 1 BAT: GCN 42238; GCN 42278 251013C 17:39:42 SVOM 345.8809 -0.1698 n/a n/a 23:03:20.59 -00:12:36.0 344 n/a 23:03:20.55 -00:12:36.9 400 n/a SVOM: GCN 42222 XRT: GCN 42232; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42298 251011B 07:08:22.33 1403191 13.287 -62.032 n/a n/a 00:52:56.30 -62:01:59.6 96.47 195 n/a n/a 107 n/a Fermi (GBM), SVOM (GRM) BAT: GCN 42197|XRT: GCN 42197; GCN 42201; GCN 42205; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42209 251007B 19:43:06 1402467 102.117 -10.303 n/a n/a 06:48:31.85 -10:18:13.8 148.16 n/a n/a n/a 152 V>19.2 SVOM UVOT: no detection BAT: GCN 42147; GCN 42317|XRT: GCN 42147; GCN 42159; GCN 42160; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42147; GCN 42193 251007A 19:36:58 1402466 128.162 21.810 64.19 104 08:32:42.33 21:48:46.3 69.43 3220 08:32:42.39 21:48:46.3 79 V>20.09 Glowbug, SVOM (C-GFT, VT, GRM), CALET (GBM), NOT, AstroSat CZTI, OSN (1.5m), CAHA (2.2m), Insight-HXMT, Konus-Wind BAT: GCN 42146; GCN 42186|XRT: GCN 42146; GCN 42161; GCN 42162; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42146; GCN 42191 251005C 16:06:53 1401726 75.673 16.882 n/a n/a 05:02:43.98 16:52:49.9 118.31 n/a n/a n/a 123 V>19.4 Fermi (GBM), AstroSat CZTI, SVOM (VT), VLT UVOT: no detection BAT: GCN 42113|XRT: GCN 42113; GCN 42116; GCN 42119; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42113; GCN 42121 251003A 01:58:30 1400964 18.503 56.507 n/a n/a 01:14:07.07 56:29:26.8 72.09 166 n/a n/a 79 V>20.01 Fermi (GBM), OSN (1.5m), COLIBRÍ, LCOGT (1m), Kilonova-Catcher, GTC (10.4m), GOTO, LAST, VLA @ 9 GHz 4.412 (GTC: absorption)| 4.38 (COLIBRÍ: photometric) UVOT: no detection BAT: GCN 42070|XRT: GCN 42070; GCN 42071; GCN 42088; GCN 42096; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42070; GCN 42100|Radio: GCN 42431 (VLA)|Redshift: GCN 42086 (GTC); GCN 42095 (COLIBRÍ) 251002A 20:14:54 SVOM 13.9059 -5.5440 n/a n/a 00:55:37.95 -05:34:00.4 3600 n/a n/a n/a 3600 n/a SVOM: GCN 42060 XRT: GCN 42084; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42099 251001B 14:17:20 1400467 42.668 -22.990 75.33 11 02:50:36.26 -23:01:12.8 116.53 n/a n/a n/a 119 V>17.4 Fermi (GBM), GOTO, TRT (0.7m), LCOGT (1m), NOT (2.5m), SVOM (VT), GTC (10.4m), COLIBRÍ 2.162 (GTC: absorption) Potential host from Legacy Survey DR10 (TRT) BAT: GCN 42039; GCN 42058|XRT: GCN 42039; GCN 42045; GCN 42052; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42039; GCN 42055|Redshift: GCN 42053 (GTC)|Host: GCN 42041 (TRT) 250925A 17:04:26 1352124 341.207 46.549 64.51 27 22:44:51.31 46:33:20.5 3700 n/a n/a n/a 3740 V>19.94 NOT, Liverpool (2m), Virtual Telescope Project (14"), COLIBRÍ, OSN (1.5m), GTC (10.4m), JinShan (100cm), Einstein Probe (WXT), Mondy (AZT-33IK 1.5m), AbAO (AS-32 0.7m), MAO/AZT-22 (1.5m) 3.899 (GTC: absorption)|4.20 (COLIBRÍ: photometric) Due to an observing constraint, Swift did not slew.|UVOT: no detection BAT: GCN 41985; GCN 42006|XRT: GCN 41988; GCN 42017; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 42007|Redshift: GCN 41997 (GTC); GCN 42004 (COLIBRÍ) 250924A 08:18:29 1351790 51.908 74.665 26.53 25 03:27:29.37 74:39:30.5 183.59 103 03:27:29.66 74:39:34.0 193 V>18.4 DDOTI, COLIBRÍ, Kilonova-Catcher, KAIT (0.76m), Mondy, Palomar (1m), SVOM (VT, GRM), AstroSat CZTI, NOT, SAO RAS (1m & 6m) BAT: GCN 41959; GCN 41987|XRT: GCN 41959; GCN 41973; GCN 41974; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 41959; GCN 41975 250920C 15:25:17 1351039 51.465 -29.646 38.02 130 03:25:51.73 -29:39:19.1 123.78 150 03:25:51.76 -29:39:20.2 124 V=14.56 Fermi (GBM), GOTO, LCOGT (1m), LCO (1m), GROWTH-India (0.7m), GTC (10.4m), SVOM (GRM), PRIME, COLIBRÍ, SALT, VLT, KAIT (0.76m), Konus-Wind, TRT (0.7m), Kilonova-Catcher 1.40 (GTC: absorption)|1.399 (SALT: absorption)|1.399 (VLT: absorption) BAT: GCN 41904; CGN 41924|XRT: GCN 41904; GCN 41922; GCN 41935; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 41920|Redshift: GCN 41928 (GTC); GCN 41952 (SALT); GCN 41955 (VLT) 250920B 08:46:30 1351008 187.316 47.843 128.44 110 12:29:16.05 47:50:15.0 90.56 820 12:29:16.07 47:50:14.4 99 V=16.53 Fermi (GBM), SVOM (C-GFT), FTW, Asiago, Glowbug, Konus-Wind, SAO RAS (1m), CrAO ZTSH, AstroSat CZTI BAT: GCN 41898; GCN 41923|XRT: GCN 41898; GCN 41909; GCN 41910; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 41898; GCN 41915 250919A 00:28:52 Fermi 303.5 -49.8 n/a n/a 19:54:13.36 -48:50:16.6 21400 n/a n/a n/a n/a n/a Fermi: GCN 41874 XRT: GCN 41885; Evans et al., 2009, MNRAS, 397, 1177|UVOT: GCN 41886