See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L9728. Start at 069:13:00 GMT PLAN ---- Finish: Obsid: 32216 SI: ACIS-I (14 ksec) Target: Perseus cluster Then: 2026:069:16:57:31 Obsid: 31149 SI: ACIS-S (30 ksec) Target: AT2026dbl 2026:070:01:46:42 Obsid: 32209 SI: ACIS-S (10 ksec) Target: Gaia DR2 330815 2026:070:04:36:56 Grating: HETG 2026:070:05:07:51 Obsid: 31123 SI: ACIS-S (30 ksec) Target: SNR 1987A 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: 2026:073:22:28:49 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 (10 Mar, 11 Mar, 12 Mar). Radiation (Geophysical Activity): The geomagnetic field is expected to be at quiet to unsettled levels on day one (10 Mar) and quiet levels on days two and three (11 Mar, 12 Mar). MP: Working on the Mar 16 loads ENG: No issues OCC: Welcome back to Gary Vincens the new OCC Manager. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 30333 Perseus cluster N ACIS-I NONE 32205 GALEXASC J211218.07-425638.9 ACIS-S NONE 31081 GS 1354-64 ACIS-S HETG 32208 UGC 06457 ACIS-I NONE Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 070/0215-0415 0300 0400 DSS-56 MADRID 2300-0000 EDT, Tue 10 Mar 070/0915-1115 1000 1100 DSS-26 GOLDSTONE 0600-0700 EDT, Wed 11 Mar 070/1800-2000 1845 1945 DSS-26 GOLDSTONE 1445-1545 EDT, Wed 11 Mar SNAPSHOT summary: ----------------- UTC 2026:069:11:00:01 (Mar10) f_ACE 8.98e+00 F_CRM 3.51e+07 Kp 1.0 R km 111230A OBT 2026:069:10:56:48 CTUVCDU 7628543 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 889527408.80 ONLVCDU 7628536 OBC Errs 0 OBSID 29920 EPState SUN SIM TTpos 75624 HETG Angle 77.59 PCADMODE NPNT RA 163.644 Bus V 26.64 SIM FApos -467 LETG Angle 76.09 PCONTROL NPNT Dec 12.506 Bus I 23.66 AOFSTAR GUID Roll 218.905 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 15.30 Yaw Rate -0.36 HRC-S HV OFF ACA CCD Temp -8.8 Dith Zang 6.35 Pitch Rate -0.52 SHLD HV 0.0 ACA Int Time 1.698 Roll Rate -0.04 EVT RT 5354 AOACSTAT OK FSS SunBeta NSUN SHLD RT 0 FSS Alfa -49.57 Batt 1 SOC 100.00% Avg HRMA Temp 72.92 FSS Beta -49.72 Batt 2 SOC 100.00% A -15 V -0.62 Avg OBA Temp 77.59 SA Resolv 169.22 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 11.79 A +24 V 0.00 HRMA power 94.40 SCS 128 ACT -Y SA Amps 11.60 OBA power 35.10 SCS 129 INAC +Y SA Temp 114.81 SCS 130 ACT -Y SA Temp 113.89 ACIS Stat7-0 6 Roll Mom. 5.944 SCS 131 ACT Cold Rad -120. Pitch Mom. 10.595 SCS 132 INAC Ephin Temp 0.0000 Warm Rad -79.6 Yaw Mom. -4.125 SCS 133 ACT EIO Temp 0.0000 RadMon ENAB PMTANKP 148.534 SCS 107 INAC EPH temp 149.99 UpLCmdAcc 30812 IRU2G2 curr 122.40 M Unload MON Cmd Rej A 185 IRU2G1 curr 96.00 Roll Bias 1.9920 TSC Move STOP Prop. line 03 118.31 Pitch Bias -4.1721 FA Move STOP CTX A PWR 36.32 Prop. line 04 119.92 Yaw Bias -1.8284 OTG Move DISA CTX A Volts 3.52 UTC 2026:069:14:52:01 (Mar10) f_ACE 8.55e+00 F_CRM 3.77e+07 Kp 2.7 R km 124866A Currently scheduled FPSI, OTG : ACIS-I NONE Estimated Kp : 2.7 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 6.82e+00 GOES-R P4 flux, in RADMON P4GM units : 2.00e-02 GOES-R P7 flux, in RADMON P41GM units : 8.34e-03 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 6.48e+02 Orbit Start Time : 2026:068:21:54:18 Geocentric Distance (km), Orbit Leg : 124729 A CRM Region : 2 (Magnetosheath) External Proton Flux (p/cm^2-s-sr-MeV) : 1.9070e+02 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 1.9070e+02 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.5498e+08 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 3.7666e+07