See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L9871. Start at 212:12:56 GMT PLAN ---- Finish: Then: 2026:212:13:15:19 Obsid: 32466 SI: ACIS-S (10 ksec) Target: Gaia DR2 688534 2026:212:16:43:22 Obsid: 30347 SI: ACIS-I (22 ksec) Target: Perseus cluster 2026:213:00:46:09 Obsid: 32473 SI: ACIS-S (10 ksec) Target: PSO J308.0416-2 2026:213:05:20:44 Obsid: 30350 SI: ACIS-I (20 ksec) Target: Perseus cluster 2026:213:11:56:56 Obsid: 32463 SI: ACIS-I (10 ksec) Target: SWIFT J2105.1-2 For the weekend: 2026:213:15:59:03 Obsid: 30351 SI: ACIS-I (18 ksec) Target: Perseus cluster 2026:213:22:53:16 Obsid: 32468 SI: ACIS-S (9 ksec) Target: SNR G1.9+0.3 2026:214:01:43:29 Grating: HETG 2026:214:01:45:32 RADMON Disable 2026:214:13:30:05 Grating: NONE 2026:214:13:44:14 RADMON Enable 2026:214:14:08:32 Obsid: 30352 SI: ACIS-I (23 ksec) Target: Perseus cluster 2026:214:22:17:33 Obsid: 32469 SI: ACIS-I (10 ksec) Target: Perseus cluster 2026:215:01:34:06 Obsid: 30406 SI: ACIS-S (31 ksec) Target: ClG J0242-2132 2026:215:10:48:38 Obsid: 31052 SI: ACIS-S (11 ksec) Target: GL 783 NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 1 Supports Completed in the last 24 hours (Total time: 2 hours) 5 SSR dumps Loads good through: 2026:217:07:19:57.000 Radiation (Solar Activity): Solar activity is expected to be low with a chance for M-class flares on days one, two, and three (31 Jul, 01 Aug, 02 Aug). Radiation (Geophysical Activity): The geomagnetic field is expected to be at quiet to active levels on days one and two (31 Jul, 01 Aug) and quiet levels on day three (02 Aug). MP: No issues. ENG: No issues. GOT: No issues. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 29881 SDSS J122558.56+042826.3 ACIS-S NONE 29822 SNR G1.9+0.3 ACIS-S NONE 31309 ZTF26aavrgaw ACIS-S NONE 32472 PSO J308.0416-21.2339 ACIS-S NONE Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 213/1250-1450 1335 1435 DSS-36 CANBERRA 0935-1035 EDT, Sat 1 Aug 214/0225-0505 0310 0450 DSS-24 GOLDSTONE 2310-0050 EDT, Sat 1 Aug 214/1625-1825 1710 1810 DSS-23 GOLDSTONE 1310-1410 EDT, Sun 2 Aug 214/2315-0115 0000 0100 DSS-23 GOLDSTONE 2000-2100 EDT, Sun 2 Aug 215/0430-0630 0515 0615 DSS-24 GOLDSTONE 0115-0215 EDT, Mon 3 Aug 215/0930-1130 1015 1115 DSS-23 GOLDSTONE 0615-0715 EDT, Mon 3 Aug SNAPSHOT summary: ----------------- UTC 2026:212:03:59:02 (Jul31) f_ACE 5.07e+01 F_CRM 5.12e+08 Kp 4.0 R km 105428D OBT 2026:212:03:55:55 CTUVCDU 5413759 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 901857355.98 ONLVCDU 5413752 OBC Errs 0 OBSID 32470 EPState SUN SIM TTpos 75623 HETG Angle 77.59 PCADMODE NPNT RA 220.899 Bus V 27.26 SIM FApos -467 LETG Angle 75.71 PCONTROL NPNT Dec 58.913 Bus I 23.40 AOFSTAR GUID Roll 252.005 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 15.65 Yaw Rate 0.56 HRC-S HV OFF ACA CCD Temp -10.4 Dith Zang -1.48 Pitch Rate -0.04 SHLD HV 0.0 ACA Int Time 1.698 Roll Rate 0.06 EVT RT 5609 AOACSTAT OK FSS SunBeta SUN SHLD RT 0 FSS Alfa 7.16 Batt 1 SOC 100.00% Avg HRMA Temp 72.38 FSS Beta 14.95 Batt 2 SOC 100.00% A -15 V -0.62 Avg OBA Temp 78.55 SA Resolv 74.45 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 11.60 A +24 V 0.00 HRMA power 37.60 SCS 128 INAC -Y SA Amps 11.41 OBA power 35.10 SCS 129 ACT +Y SA Temp 107.90 SCS 130 ACT -Y SA Temp 107.11 ACIS Stat7-0 6 Roll Mom. 3.427 SCS 131 INAC Cold Rad -125. Pitch Mom. 5.858 SCS 132 ACT Ephin Temp 0.0000 Warm Rad -84.4 Yaw Mom. 11.792 SCS 133 ACT EIO Temp 0.0000 RadMon ENAB PMTANKP 148.534 SCS 107 INAC EPH temp 126.31 UpLCmdAcc 55557 IRU2G2 curr 120.00 M Unload MON Cmd Rej A 189 IRU2G1 curr 93.60 Roll Bias 2.0581 TSC Move STOP Prop. line 03 172.34 Pitch Bias -4.2450 FA Move STOP CTX A PWR 36.27 Prop. line 04 148.52 Yaw Bias -1.8569 OTG Move DISA CTX A Volts 3.52 UTC 2026:212:12:56:01 (Jul31) f_ACE 3.53e+02 F_CRM 5.12e+08 Kp 4.0 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 : 2.92e+01 GOES-R P7 flux, in RADMON P41GM units : 2.50e-02 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 6.36e+02 Orbit Start Time : 2026:177:08:08:58 Geocentric Distance (km), Orbit Leg : 130478 A 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