See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L9710. Start at 051:14:00 GMT PLAN ---- Finished: Obsid: 32167 SI: ACIS-I (10 ksec) Target: Center of COSMO Next: 2026:051:15:13:18 Obsid: 30318 SI: ACIS-I (32 ksec) Target: Perseus cluster 2026:052:01:01:24 Obsid: 32168 SI: ACIS-I (19 ksec) Target: Center of COSMO 2026:052:07:59:36 Obsid: 32170 SI: ACIS-S (11 ksec) Target: ZTF J1905+3134 2026:052:11:40:05 Obsid: 30319 SI: ACIS-I (19 ksec) Target: Perseus cluster For the weekend: 2026:052:17:00:58 Grating: HETG 2026:052:17:03:25 RADMON Disable 2026:053:05:20:48 Grating: NONE 2026:053:05:33:24 RADMON Enable 2026:053:05:55:42 Obsid: 30058 SI: ACIS-I (13 ksec) Target: Center of COSMO 2026:053:10:14:07 Obsid: 32163 SI: ACIS-S (11 ksec) Target: MRCB0157-311 2026:053:13:59:07 Obsid: 32165 SI: ACIS-I (15 ksec) Target: Center of COSMO 2026:053:18:50:47 Obsid: 32172 SI: ACIS-S (11 ksec) Target: MRCB0157-311 2026:053:22:35:44 Obsid: 32166 SI: ACIS-I (12 ksec) Target: Center of COSMO 2026:054:03:31:44 Obsid: 31358 SI: HRC-I (4 ksec) Target: ArLac 2026:054:04:51:54 Obsid: 31359 SI: HRC-I (4 ksec) Target: ArLac 2026:054:06:12:04 Obsid: 31360 SI: HRC-I (4 ksec) Target: ArLac 2026:054:08:06:27 Obsid: 30529 SI: ACIS-S (11 ksec) Target: SDSS J102258.41 2026:054:11:55:22 Obsid: 30297 SI: ACIS-I (27 ksec) Target: Perseus cluster NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 3 Supports Completed in the last 24 hours (Total time: 6 hours) 3 SSR dumps Radiation (Solar Activity): Solar activity is likely to be low with a slight chance for an M-class flare on days one, two, and three (20 Feb, 21 Feb, 22 Feb). Radiation (Geophysical Activity): The geomagnetic field is expected to be at quiet to unsettled levels on day one (20 Feb) and quiet levels on days two and three (21 Feb, 22 Feb). MP: Feb2326A loads were approved yesterday. A TOO request arrived yesterday and if approved the TOO will go into these loads so there may be a load interupt next week. ENG: No issues. GOT: No issues. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 30307 Perseus cluster ACIS-I NONE 31121 ZTF J1905+3134 ACIS-S NONE 31995 NGC3626 ACIS-S NONE 32169 Abell 2255 ACIS-I NONE Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 051/1905-2105 1950 2050 DSS-34 CANBERRA 1450-1550 EST, Fri 20 Feb 052/0210-0410 0255 0355 DSS-54 MADRID 2155-2255 EST, Fri 20 Feb 052/1035-1235 1120 1220 DSS-26 GOLDSTONE 0620-0720 EST, Sat 21 Feb 052/1835-2035 1920 2020 DSS-36 CANBERRA 1420-1520 EST, Sat 21 Feb 053/0210-0410 0255 0355 DSS-65 MADRID 2155-2255 EST, Sat 21 Feb 053/1030-1230 1115 1215 DSS-24 GOLDSTONE 0615-0715 EST, Sun 22 Feb 053/1720-1920 1805 1905 DSS-24 GOLDSTONE 1305-1405 EST, Sun 22 Feb 054/0145-0345 0230 0330 DSS-56 MADRID 2130-2230 EST, Sun 22 Feb 054/1030-1230 1115 1215 DSS-24 GOLDSTONE 0615-0715 EST, Mon 23 Feb SNAPSHOT summary: ----------------- UTC 2026:051:12:54:02 (Feb20) f_ACE 1.50e+01 F_CRM 4.65e+07 Kp 1.0 R km 143969A OBT 2026:051:12:50:52 CTUVCDU 1586175 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 887979052.01 ONLVCDU 1586168 OBC Errs 0 OBSID 32167 EPState SUN SIM TTpos 92903 HETG Angle 77.59 PCADMODE NPNT RA 149.938 Bus V 26.79 SIM FApos -535 LETG Angle 75.71 PCONTROL NPNT Dec 2.010 Bus I 22.11 AOFSTAR GUID Roll 338.671 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 10.63 Yaw Rate 0.32 HRC-S HV OFF ACA CCD Temp -3.6 Dith Zang -15.97 Pitch Rate 0.19 SHLD HV 0.0 ACA Int Time 1.698 Roll Rate -0.04 EVT RT 4844 AOACSTAT OK FSS SunBeta NSUN SHLD RT 0 FSS Alfa -49.57 Batt 1 SOC 100.00% Avg HRMA Temp 74.43 FSS Beta -49.72 Batt 2 SOC 100.00% A -15 V -0.62 Avg OBA Temp 89.17 SA Resolv 170.13 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 11.02 A +24 V 0.00 HRMA power 29.90 SCS 128 ACT -Y SA Amps 10.83 OBA power 0.00 SCS 129 ACT +Y SA Temp 116.22 SCS 130 ACT -Y SA Temp 115.12 ACIS Stat7-0 6 Roll Mom. 11.880 SCS 131 ACT Cold Rad -123. Pitch Mom. -0.410 SCS 132 INAC Ephin Temp 0.0000 Warm Rad -79.6 Yaw Mom. -1.799 SCS 133 ACT EIO Temp 0.0000 RadMon ENAB PMTANKP 148.534 SCS 107 INAC EPH temp 169.78 UpLCmdAcc 52611 IRU2G2 curr 127.20 M Unload MON Cmd Rej A 47 IRU2G1 curr 96.00 Roll Bias 1.9868 TSC Move STOP Prop. line 03 131.94 Pitch Bias -4.1678 FA Move STOP CTX B PWR 36.92 Prop. line 04 145.12 Yaw Bias -1.8242 OTG Move DISA CTX B Volts 3.54 UTC 2026:051:14:02:02 (Feb20) f_ACE 1.68e+01 F_CRM 4.65e+07 Kp 1.0 R km 144694A Currently scheduled FPSI, OTG : ACIS-I NONE Estimated Kp : 1.0 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 1.51e+01 GOES-R P4 flux, in RADMON P4GM units : 4.08e-02 GOES-R P7 flux, in RADMON P41GM units : 8.40e-03 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 3.90e+03 Orbit Start Time : 2026:050:09:37:43 Geocentric Distance (km), Orbit Leg : 144681 A CRM Region : 2 (Magnetosheath) External Proton Flux (p/cm^2-s-sr-MeV) : 5.8442e+01 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 5.8442e+01 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.2160e+08 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 4.6462e+07