See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L9737. Start at 078:13:03 GMT PLAN ---- Finish: Obsid: 32222 SI: ACIS-S (10 ksec) Target: NGC3626 Then: 2026:078:13:37:52 Obsid: 30363 SI: ACIS-I (14 ksec) Target: Perseus cluster 2026:078:18:21:04 Obsid: 32223 SI: ACIS-S (10 ksec) Target: NGC3626 2026:078:21:49:20 Obsid: 32235 SI: ACIS-I (10 ksec) Target: Perseus cluster 2026:079:01:07:37 Obsid: 32236 SI: ACIS-I (11 ksec) Target: Abell 2255 2026:079:04:21:58 Grating: HETG 2026:079:04:24:24 RADMON Disable NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 3 Supports Completed in the last 24 hours (Total time: 6 hours) 3 SSR dumps Loads good through: 2026:081:20:43:51.000 CAP's / Procedures Run: CAP # | Time | Title / Description / Notes [750AS](/occweb/web/webapps/ifot/ifot.php?r=flightops&t=properties&format=sheet&id=1001989) | 077/2255z | Low Rate Dump of the Off-line OBC Checksummed Memory (XSUM_1) Perform on-orbit OBC checksummed memory dump of the off-line OBC (address range of 0x00000 to 0x0FFFF). [750AT](/occweb/web/webapps/ifot/ifot.php?r=flightops&t=properties&format=sheet&id=1002011) | 078/0316z | Low Rate Dump of the Off-line OBC Checksummed Memory (XSUM_2) Perform on-orbit OBC checksummed memory dump of the off-line OBC (address range of 0x10000 to 0x1FFFF). [1806](/occweb/web/webapps/ifot/ifot.php?r=flightops&t=properties&format=sheet&id=1002014) | 078/1243z | Replace SCS 177 Monitor Window Commanding Replace the contents of SCS 177 which commands eight monitor windows in the ACA when activated at the start of each maneuver. Radiation (Solar Activity): Solar activity is expected to be low with a chance for M-class flares and a slight chance for an X-class flare on days one, two, and three (19 Mar, 20 Mar, 21 Mar). Radiation (Geophysical Activity): The geomagnetic field is expected to be at quiet to major storm levels on day one (19 Mar), unsettled to major storm levels on day two (20 Mar) and active to major storm levels on day three (21 Mar). Protons have a slight chance of crossing threshold on days one, two, and three (19 Mar, 20 Mar, 21 Mar). MP: MAR2326A command loads in works. Possibly out for review by today or tomorrow morning. ENG: No issues. GOT: No issues. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 32233 Perseus cluster E ACIS-I NONE 31378 Cas A ACIS-I NONE 32226 NGC4548 ACIS-S NONE 31381 Cas A ACIS-I NONE 31380 Cas A ACIS-I NONE 31379 Cas A ACIS-I NONE Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 078/1135-1335 1220 1320 DSS-26 GOLDSTONE 0820-0920 EDT, Thu 19 Mar 079/0205-0405 0250 0350 DSS-65 MADRID 2250-2350 EDT, Thu 19 Mar 079/0955-1155 1040 1140 DSS-34 CANBERRA 0640-0740 EDT, Fri 20 Mar 079/1840-2040 1925 2025 DSS-65 MADRID 1525-1625 EDT, Fri 20 Mar SNAPSHOT summary: ----------------- UTC 2026:078:13:03:01 (Mar19) f_ACE 8.02e+00 F_CRM 2.75e+07 Kp 3.0 R km 135754D OBT 2026:078:13:02:33 CTUVCDU 10692520 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 890312553.30 ONLVCDU 10692520 OBC Errs 0 OBSID 32222 EPState SUN SIM TTpos 92903 HETG Angle 77.59 PCADMODE NMAN RA 169.719 Bus V 26.79 SIM FApos -467 LETG Angle 76.09 PCONTROL NPNT Dec 18.681 Bus I 22.37 AOFSTAR GUID Roll 206.550 ACA Object SSSSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc SSSSSSSS Dith Yang 14.41 Yaw Rate 8.33 HRC-S HV OFF ACA CCD Temp -6.9 Dith Zang -9.64 Pitch Rate 36.05 SHLD HV 0.0 ACA Int Time 1.698 Roll Rate 0.70 EVT RT 3824 AOACSTAT OK FSS SunBeta NSUN SHLD RT 0 FSS Alfa -49.57 Batt 1 SOC 100.00% Avg HRMA Temp 73.14 FSS Beta -49.72 Batt 2 SOC 100.00% A -15 V -0.62 Avg OBA Temp 81.93 SA Resolv 159.87 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 69.10 SCS 128 ACT -Y SA Amps 11.21 OBA power 35.10 SCS 129 ACT +Y SA Temp 114.81 SCS 130 ACT -Y SA Temp 113.58 ACIS Stat7-0 6 Roll Mom. 4.981 SCS 131 ACT Cold Rad -118. Pitch Mom. 18.435 SCS 132 ACT Ephin Temp 0.0000 Warm Rad -77.1 Yaw Mom. -4.024 SCS 133 ACT EIO Temp 0.0000 RadMon ENAB PMTANKP 150.132 SCS 107 INAC EPH temp 152.81 UpLCmdAcc 49447 IRU2G2 curr 122.40 M Unload MON Cmd Rej A 90 IRU2G1 curr 96.00 Roll Bias 1.9946 TSC Move STOP Prop. line 03 131.94 Pitch Bias -4.1769 FA Move STOP CTX A PWR 36.32 Prop. line 04 131.94 Yaw Bias -1.8340 OTG Move DISA CTX A Volts 3.52 UTC 2026:078:13:03:01 (Mar19) f_ACE 8.02e+00 F_CRM 2.75e+07 Kp 3.0 R km 135754D Currently scheduled FPSI, OTG : ACIS-S NONE Estimated Kp : 0.3 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 1.41e+01 GOES-R P4 flux, in RADMON P4GM units : 6.06e-02 GOES-R P7 flux, in RADMON P41GM units : 8.38e-03 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 1.79e+03 Orbit Start Time : 2026:076:20:17:07 Geocentric Distance (km), Orbit Leg : 135841 D CRM Region : 2 (Magnetosheath) External Proton Flux (p/cm^2-s-sr-MeV) : 3.6493e+01 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 3.6493e+01 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 5.0428e+07 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 2.7506e+07