See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L9778. Start at 119:13:00 GMT PLAN ---- Finish: Obsid: 31106 SI: ACIS-S (60 ksec) Target: EP260321a Then: 2026:120:04:38:08 Grating: LETG 2026:120:05:00:47 Obsid: 31735 SI: ACIS-S (29 ksec) Target: MKN421 NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 3 Supports Completed in the last 24 hours (Total time: 5.6 hours) 2 SSR dumps Radiation (Solar Activity): Solar activity is likely to be moderate with a slight chance for an X-class flare on days one, two, and three (29 Apr, 30 Apr, 01 May). Radiation (Geophysical Activity): The geomagnetic field is expected to be at quiet to active levels on days one and two (29 Apr, 30 Apr) and quiet to unsettled levels on day three (01 May). Protons have a slight chance of crossing threshold on days one, two, and three (29 Apr, 30 Apr, 01 May). MP: May0426 loads are in work. ENG: No issues. GOT: No issues. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 32319 SPT-CLJ2223-5015 ACIS-S NONE 29883 SDSS J152322.13+124133.2 ACIS-S NONE 32320 NGC5728 ACIS-S NONE 30046 SPT-CLJ2223-5015 ACIS-S NONE Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 119/1005-1205 1050 1150 DSS-26 GOLDSTONE 0650-0750 EDT, Wed 29 Apr 119/1845-2045 1930 2030 DSS-65 MADRID 1530-1630 EDT, Wed 29 Apr 120/0215-0415 0300 0400 DSS-65 MADRID 2300-0000 EDT, Wed 29 Apr 120/0940-1140 1025 1125 DSS-24 GOLDSTONE 0625-0725 EDT, Thu 30 Apr 120/1700-1900 1745 1845 DSS-36 CANBERRA 1345-1445 EDT, Thu 30 Apr SNAPSHOT summary: ----------------- UTC 2026:119:11:50:01 (Apr29) f_ACE 5.41e+01 F_CRM 1.54e+07 Kp 1.3 R km 86282A OBT 2026:119:11:46:56 CTUVCDU 7721599 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 893850416.21 ONLVCDU 7721592 OBC Errs 0 OBSID 31106 EPState SUN SIM TTpos 75623 HETG Angle 77.59 PCADMODE NMAN RA 148.639 Bus V 27.11 SIM FApos -467 LETG Angle 75.71 PCONTROL NPNT Dec -0.824 Bus I 22.63 AOFSTAR GUID Roll 253.972 ACA Object SSSSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc SSSSSSSS Dith Yang -13.00 Yaw Rate -65.87 HRC-S HV OFF ACA CCD Temp -9.1 Dith Zang -15.97 Pitch Rate -37.11 SHLD HV 0.0 ACA Int Time 1.698 Roll Rate 7.85 EVT RT 6374 AOACSTAT OK FSS SunBeta SUN SHLD RT 0 FSS Alfa 0.63 Batt 1 SOC 100.00% Avg HRMA Temp 73.57 FSS Beta -22.03 Batt 2 SOC 100.00% A -15 V -0.62 Avg OBA Temp 78.88 SA Resolv 111.20 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 11.41 A +24 V 0.00 HRMA power 33.00 SCS 128 ACT -Y SA Amps 10.83 OBA power 43.60 SCS 129 ACT +Y SA Temp 110.82 SCS 130 ACT -Y SA Temp 110.20 ACIS Stat7-0 6 Roll Mom. 6.258 SCS 131 ACT Cold Rad -125. Pitch Mom. 8.935 SCS 132 ACT Ephin Temp 0.0000 Warm Rad -82.0 Yaw Mom. 1.563 SCS 133 ACT EIO Temp 0.0000 RadMon ENAB PMTANKP 148.534 SCS 107 INAC EPH temp 175.44 UpLCmdAcc 3685 IRU2G2 curr 117.60 M Unload MON Cmd Rej A 93 IRU2G1 curr 93.60 Roll Bias 2.0040 TSC Move STOP Prop. line 03 181.31 Pitch Bias -4.1959 FA Move STOP CTX A PWR 36.32 Prop. line 04 138.53 Yaw Bias -1.8316 OTG Move DISA CTX A Volts 3.52 UTC 2026:119:12:50:01 (Apr29) f_ACE 4.03e+01 F_CRM 1.57e+07 Kp 1.3 R km 91981A Currently scheduled FPSI, OTG : ACIS-S NONE Estimated Kp : 0.3 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 4.36e+01 GOES-R P4 flux, in RADMON P4GM units : 0.00e+00 GOES-R P7 flux, in RADMON P41GM units : 2.78e-03 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 3.67e+02 Orbit Start Time : 2026:119:03:45:19 Geocentric Distance (km), Orbit Leg : 91487 A CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 1.8579e+02 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 1.8579e+02 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 3.6549e+07 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.5666e+07