HRC SOT Shift Report

See http://cxc.harvard.edu/mta/SOT_reports/sot-shift.html

Report M9686

Start at 344:16:25
 = 11:35am Wednesday Dec 10, 2025
End at 344:19:28
 = 02:28pm Wednesday Dec 10, 2026

HRC SOT Shift Report M9686

HRC Personnel: Dan Patnaude, Ralph Kraft, Gerrit Schellenberger, Tom Gauron

PLAN:
----

Execute CAP 1800

NOTES/ISSUES/PROBLEMS:
----------------------

CAP executed nominally. No issues. HRC team continues to investigate root cause of the
high count rate event.


CLD Files used:

2A_NOBLANK_135.CLD
2A_DEADMAN60_200.CLD
2A_ANTICO_ON_135.CLD

SUMMARY:
------

Deadman timer enabled at 09:13 local time (14:13 UT)
Deadman timer recycled at 10:00 local time (15:00 UT)
HRC at operational voltages at 10:18 local time (15:18 UT)
Deadman timer terminated at 10:19 local time (15:19 UT)
HRC powered down nominally at 15:39 UT via commands in the daily loads


UTC 2026:027:04:28:02 (Jan27) f_ACE 3.85e+01 F_CRM 6.49e+07 Kp 1.0 R km 115536A
OBT 2026:027:04:25:28  CTUVCDU 10152959  OBC s/w NRML  FMT2_NORM   CPEstat NORM
OBT      885875128.58  ONLVCDU 10152952  OBC Errs   0
                                                     OBSID  31463  EPState  SUN
SIM TTpos   75623  HETG Angle 77.59  PCADMODE NPNT   RA   252.785  Bus V  26.95
SIM FApos    -467  LETG Angle 76.09  PCONTROL NPNT   Dec    4.983  Bus I  19.28
                                     AOFSTAR  GUID   Roll  59.000
ACA Object FFFSSSSS    Dither  ENAB                                HRC-I HV OFF
ACA ImFunc TTTTTTTT    Dith Yang  -2.88    Yaw Rate     -0.42      HRC-S HV OFF
ACA CCD Temp   -6.2    Dith Zang -12.63    Pitch Rate    0.04      SHLD HV  0.0
ACA Int Time  1.698                        Roll Rate    -0.18      EVT RT  6374
AOACSTAT         OK    FSS SunBeta  SUN                            SHLD RT    0
                       FSS Alfa    5.91    Batt 1 SOC  100.00%
Avg HRMA Temp 75.30    FSS Beta   29.38    Batt 2 SOC  100.00%   A -15 V  -0.62
Avg OBA Temp  83.70    SA Resolv  59.89    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    9.47    A +24 V   0.00
HRMA power     0.00    SCS 128   ACT       -Y SA Amps    9.48  
OBA power      0.00    SCS 129   ACT       +Y SA Temp  116.58  
                       SCS 130   ACT       -Y SA Temp  115.49   ACIS Stat7-0 65
Roll Mom.    -6.836    SCS 131   ACT                            Cold Rad -123.1
Pitch Mom.    9.944    SCS 132   ACT       Ephin Temp  0.0000   Warm Rad  -82.0
Yaw Mom.      4.915    SCS 133   ACT       EIO Temp    0.0000   RadMon     ENAB
PMTANKP     150.132    SCS 107  INAC       EPH temp    178.27  
                                                                UpLCmdAcc  1846  
IRU2G2 curr   122.40                       M Unload     MON     Cmd Rej A   203  
IRU2G1 curr    96.00   Roll Bias   1.9686  TSC Move    STOP
Prop. line 03 175.74   Pitch Bias -4.1457  FA Move     STOP   CTX B PWR   36.92
Prop. line 04 136.33   Yaw Bias   -1.8198  OTG Move    DISA   CTX B Volts  3.54


UTC 2026:027:13:45:01 (Jan27) f_ACE 4.03e+01 F_CRM 7.59e+07 Kp 1.3 R km 139897A
                    Currently scheduled FPSI, OTG : ACIS-S NONE
                                     Estimated Kp : 1.3
        ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 3.61e+01
            GOES-R P4 flux, in RADMON P4GM  units : 3.04e-01
            GOES-R P7 flux, in RADMON P41GM units : 5.59e-03
            GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 3.67e+03
                                 Orbit Start Time : 2026:026:14:23:39
              Geocentric Distance (km), Orbit Leg : 139861 A
                                       CRM Region : 2 (Magnetosheath)
           External Proton Flux (p/cm^2-s-sr-MeV) : 2.2364e+02
         Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 2.2364e+02
  External Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.5426e+08
Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 7.5917e+07