See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L9875. Start at 216:13:00 GMT PLAN ---- Finish: Obsid: 30348 SI: ACIS-I (13 ksec) Target: Perseus cluster Then: 2026:216:16:32:54 Grating: HETG 2026:216:16:35:20 RADMON Disable 2026:217:04:57:18 Grating: NONE 2026:217:05:09:31 RADMON Enable 2026:217:05:31:49 Obsid: 31665 SI: ACIS-S (15 ksec) Target: PSO J308.0416-2 2026:217:10:58:27 Obsid: 29871 SI: ACIS-S (19 ksec) Target: SDSS J143345.14 NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 2 Supports Completed in the last 24 hours (Total time: 3.8 hours) 3 SSR dumps Radiation (Solar Activity): Solar activity is expected to be low with a slight chance for an M-class flare on days one, two, and three (04 Aug, 05 Aug, 06 Aug). The ACE P3 rates have decreased significantly over the last 24 hours. Radiation (Geophysical Activity): The geomagnetic field is expected to be at quiet levels on days one, two, and three (04 Aug, 05 Aug, 06 Aug). MP: Aug1024 loads are in work. ENG: No issues. GOT: No issues. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 31117 Gaia DR3 5414242958825679488 ACIS-S NONE 32479 GL 783 ACIS-S NONE 31052 GL 783 ACIS-S NONE 31930 NGC3137 ACIS-S NONE Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 216/1440-1640 1525 1625 DSS-36 CANBERRA 1125-1225 EDT, Tue 4 Aug 217/0250-0450 0335 0555 DSS-23 GOLDSTONE 2335-0155 EDT, Tue 4 Aug SNAPSHOT summary: ----------------- UTC 2026:216:11:03:01 (Aug 4) f_ACE 5.38e+02 F_CRM 5.12e+08 Kp 3.0 R km 105428D OBT 2026:216:11:00:22 CTUVCDU 6861823 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 902228422.44 ONLVCDU 6861816 OBC Errs 0 OBSID 32480 EPState SUN SIM TTpos 75625 HETG Angle 77.59 PCADMODE NPNT RA 302.770 Bus V 27.26 SIM FApos -467 LETG Angle 75.71 PCONTROL NPNT Dec -36.106 Bus I 21.08 AOFSTAR GUID Roll 344.982 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 12.00 Yaw Rate 0.17 HRC-S HV OFF ACA CCD Temp -7.3 Dith Zang 1.19 Pitch Rate 0.19 SHLD HV 0.0 ACA Int Time 1.698 Roll Rate 0.05 EVT RT 3569 AOACSTAT OK FSS SunBeta NSUN SHLD RT 0 FSS Alfa -49.57 Batt 1 SOC 100.00% Avg HRMA Temp 73.03 FSS Beta -49.72 Batt 2 SOC 100.00% A -15 V -0.62 Avg OBA Temp 79.84 SA Resolv 159.17 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 10.83 A +24 V 0.00 HRMA power 37.60 SCS 128 ACT -Y SA Amps 10.06 OBA power 0.00 SCS 129 ACT +Y SA Temp 108.97 SCS 130 ACT -Y SA Temp 108.97 ACIS Stat7-0 6 Roll Mom. 11.379 SCS 131 ACT Cold Rad -118. Pitch Mom. -15.274 SCS 132 ACT Ephin Temp 0.0000 Warm Rad -77.1 Yaw Mom. 1.025 SCS 133 ACT EIO Temp 0.0000 RadMon ENAB PMTANKP 98.974 SCS 107 INAC EPH temp 126.31 UpLCmdAcc 64561 IRU2G2 curr 124.80 M Unload MON Cmd Rej A 112 IRU2G1 curr 96.00 Roll Bias 2.0614 TSC Move STOP Prop. line 03 118.31 Pitch Bias -4.2467 FA Move STOP CTX B PWR 36.92 Prop. line 04 113.47 Yaw Bias -1.8595 OTG Move DISA CTX B Volts 3.54 UTC 2026:216:12:56:01 (Aug 4) f_ACE 4.91e+02 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 : 2.00e-02 GOES-R P7 flux, in RADMON P41GM units : 2.78e-03 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 1.81e+02 Orbit Start Time : 2026:177:08:08:58 Geocentric Distance (km), Orbit Leg : 95013 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