See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L9716. Start at 057:14:00 GMT PLAN ---- Finish: Obsid: 30303 SI: ACIS-I (30 ksec) Target: Perseus cluster Then: 2026:057:16:09:45 Obsid: 31147 SI: ACIS-S (19 ksec) Target: AT2026dbl 2026:057:22:16:32 Obsid: 32182 SI: ACIS-S (5 ksec) Target: HD 20385 2026:057:23:51:46 Grating: HETG 2026:057:23:53:49 RADMON Disable 2026:058:11:57:43 Grating: NONE 2026:058:12:09:48 RADMON Enable 2026:058:12:32:06 Obsid: 30304 SI: ACIS-I (24 ksec) Target: Perseus cluster NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 2 Supports Completed in the last 24 hours (Total time: 4 hours) 3 SSR dumps Radiation (Solar Activity): Solar activity is expected to be low with a chance for M-class flares on days one, two, and three (26 Feb, 27 Feb, 28 Feb). Radiation (Geophysical Activity): The geomagnetic field is expected to be at quiet to active levels on day one (26 Feb), and quiet to unsettled levels on days two and three (27 Feb, 28 Feb). MP: Mar0226A load review today by 1pm. ENG: No issues. GOT: No issues. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 32179 SDSS J102258.41+123429.7 ACIS-S NONE 30256 Center of COSMOS-Web ACIS-I NONE 30301 Perseus cluster ACIS-I NONE 31896 ArLac HRC-I NONE 31362 ArLac HRC-I NONE 31080 GS 1354-64 ACIS-S HETG Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 057/1815-2015 1900 2000 DSS-36 CANBERRA 1400-1500 EST, Thu 26 Feb 058/1030-1300 1115 1245 DSS-24 GOLDSTONE 0615-0745 EST, Fri 27 Feb 058/2215-0015 2300 0000 DSS-54 MADRID 1800-1900 EST, Fri 27 Feb SNAPSHOT summary: ----------------- UTC 2026:057:13:40:02 (Feb26) f_ACE 2.57e+01 F_CRM 4.93e+08 Kp 3.3 R km 125412D OBT 2026:057:13:36:51 CTUVCDU 3619967 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 888500211.18 ONLVCDU 3619960 OBC Errs 0 OBSID 30303 EPState SUN SIM TTpos 92903 HETG Angle 77.59 PCADMODE NPNT RA 49.926 Bus V 26.95 SIM FApos -535 LETG Angle 75.71 PCONTROL NPNT Dec 41.526 Bus I 21.34 AOFSTAR GUID Roll 282.017 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang -4.38 Yaw Rate 0.51 HRC-S HV OFF ACA CCD Temp -6.9 Dith Zang 12.20 Pitch Rate 0.08 SHLD HV 0.0 ACA Int Time 1.698 Roll Rate 0.28 EVT RT 3824 AOACSTAT OK FSS SunBeta SUN SHLD RT 0 FSS Alfa 7.20 Batt 1 SOC 100.00% Avg HRMA Temp 73.57 FSS Beta 8.04 Batt 2 SOC 100.00% A -15 V -0.62 Avg OBA Temp 85.31 SA Resolv 81.63 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 10.63 A +24 V 0.00 HRMA power 31.50 SCS 128 ACT -Y SA Amps 10.44 OBA power 0.00 SCS 129 ACT +Y SA Temp 114.81 SCS 130 INAC -Y SA Temp 114.51 ACIS Stat7-0 6 Roll Mom. 3.495 SCS 131 ACT Cold Rad -125. Pitch Mom. 5.199 SCS 132 ACT Ephin Temp 0.0000 Warm Rad -82.0 Yaw Mom. 12.565 SCS 133 INAC EIO Temp 0.0000 RadMon ENAB PMTANKP 148.534 SCS 107 INAC EPH temp 169.78 UpLCmdAcc 2453 IRU2G2 curr 127.20 M Unload MON Cmd Rej A 99 IRU2G1 curr 93.60 Roll Bias 1.9863 TSC Move STOP Prop. line 03 172.34 Pitch Bias -4.1663 FA Move STOP CTX A PWR 36.27 Prop. line 04 158.73 Yaw Bias -1.8232 OTG Move DISA CTX A Volts 3.52 UTC 2026:057:14:05:01 (Feb26) f_ACE 2.61e+01 F_CRM 4.93e+08 Kp 3.3 R km 124151D Currently scheduled FPSI, OTG : ACIS-I NONE Estimated Kp : 3.3 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 3.72e+01 GOES-R P4 flux, in RADMON P4GM units : 6.09e-02 GOES-R P7 flux, in RADMON P41GM units : 1.96e-02 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 5.36e+03 Orbit Start Time : 2026:055:16:33:59 Geocentric Distance (km), Orbit Leg : 124168 D CRM Region : 1 (Solar_Wind) External Proton Flux (p/cm^2-s-sr-MeV) : 3.7200e+01 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 3.7200e+01 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 6.1684e+08 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 4.9330e+08