See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L9891. Start at 232:13:0 GMT PLAN ---- Finish: Obsid: 30130 SI: ACIS-S (28 ksec) Target: SNR G1.9+0.3 Then: 2026:232:13:04:03 Grating: HETG 2026:232:13:06:06 RADMON Disable 2026:233:01:49:17 RADMON Enable 2026:233:02:02:49 Obsid: 32501 SI: ACIS-S (19 ksec) Target: NGC 7213 2026:233:07:23:04 Grating: NONE 2026:233:07:55:15 Obsid: 31452 SI: ACIS-S (12 ksec) Target: ACT-CL J0307.0- 2026:233:11:57:40 Obsid: 30447 SI: HRC-I (7 ksec) Target: G29-38 NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 3 Supports Completed in the last 24 hours (Total time: 5.8 hours) 3 SSR dumps Radiation (Solar Activity): Solar activity is expected to be low with a 35% chance for M-class flares on days one, two, and three (20 Aug, 21 Aug, 22 Aug). An M8.1 class flare has been observed this morning, and further updates on possible impacts will be provided once they become available. Radiation (Geophysical Activity): The geomagnetic field is expected to be at quiet to active levels on days one, two, and three (20 Aug, 21 Aug, 22 Aug). MP: Aug2426A load review today at noon. ENG: No issues. GOT: No issues. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 32505 TIC466376085 HRC-I NONE 31002 PSR J1813-1246 ACIS-I NONE 32506 SN 2023ixf ACIS-S NONE 29830 SN 1986J ACIS-S NONE 30354 Perseus cluster S ACIS-I NONE 30089 TV Cassiopeia ACIS-S HETG 31167 SN 2023ixf ACIS-S NONE 32504 TIC466376085 HRC-I NONE Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 232/1615-1815 1700 1800 DSS-34 CANBERRA 1300-1400 EDT, Thu 20 Aug 233/0135-0335 0220 0320 DSS-23 GOLDSTONE 2220-2320 EDT, Thu 20 Aug 233/1045-1245 1130 1230 DSS-56 MADRID 0730-0830 EDT, Fri 21 Aug 233/1430-1630 1515 1615 DSS-53 MADRID 1115-1215 EDT, Fri 21 Aug SNAPSHOT summary: ----------------- UTC 2026:232:10:58:02 (Aug20) f_ACE 1.13e+01 F_CRM 5.12e+08 Kp 3.0 R km 105428D OBT 2026:232:10:55:16 CTUVCDU 12255359 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 903610516.07 ONLVCDU 12255352 OBC Errs 0 OBSID 30130 EPState SUN SIM TTpos 75624 HETG Angle 77.59 PCADMODE NPNT RA 267.177 Bus V 27.26 SIM FApos -467 LETG Angle 75.71 PCONTROL NPNT Dec -27.141 Bus I 20.31 AOFSTAR GUID Roll 271.123 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang -13.27 Yaw Rate 0.35 HRC-S HV OFF ACA CCD Temp -3.2 Dith Zang 0.83 Pitch Rate 0.29 SHLD HV 0.0 ACA Int Time 1.698 Roll Rate -0.45 EVT RT 6119 AOACSTAT OK FSS SunBeta SUN SHLD RT 0 FSS Alfa -0.21 Batt 1 SOC 100.00% Avg HRMA Temp 74.54 FSS Beta -30.68 Batt 2 SOC 100.00% A -15 V -0.62 Avg OBA Temp 90.18 SA Resolv 120.33 Batt 3 SOC 100.00% A +15 V 2.81 OBA Tavg Fault NFLT SA Sun Pres ILLM A +5 V 4.84 OBA Trng Fault NFLT +Y SA Amps 10.25 A +24 V 0.00 HRMA power 29.90 SCS 128 INAC -Y SA Amps 9.67 OBA power 0.00 SCS 129 ACT +Y SA Temp 110.51 SCS 130 ACT -Y SA Temp 110.20 ACIS Stat7-0 6 Roll Mom. 3.411 SCS 131 INAC Cold Rad -118. Pitch Mom. 2.705 SCS 132 ACT Ephin Temp 0.0000 Warm Rad -77.1 Yaw Mom. -2.394 SCS 133 ACT EIO Temp 0.0000 RadMon ENAB PMTANKP 151.731 SCS 107 INAC EPH temp 126.31 UpLCmdAcc 24528 IRU2G2 curr 117.60 M Unload MON Cmd Rej A 181 IRU2G1 curr 93.60 Roll Bias 2.0714 TSC Move STOP Prop. line 03 165.53 Pitch Bias -4.2619 FA Move STOP CTX B PWR 36.92 Prop. line 04 148.52 Yaw Bias -1.8596 OTG Move DISA CTX B Volts 3.54 UTC 2026:232:12:56:02 (Aug20) f_ACE 1.33e+01 F_CRM 5.12e+08 Kp 3.0 R km 105428D Currently scheduled FPSI, OTG : ACIS-S NONE Estimated Kp : 2.7 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 2.29e+01 GOES-R P4 flux, in RADMON P4GM units : 0.00e+00 GOES-R P7 flux, in RADMON P41GM units : 2.78e-03 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 4.37e+02 Orbit Start Time : 2026:177:08:08:58 Geocentric Distance (km), Orbit Leg : 76131 D CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 1.8248e+04 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 1.8248e+04 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 8.1745e+08 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 5.1173e+08