See http://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L5905. Start at 264:13:00 GMT PLAN ---- Safemode entry at ~264:04:35z (prior to the maneuver at SEP2115 schedule start) and ran nominally Sun-position monitor tripped causing safe-mode Attitude at the time of the trip was very near the position-monitor limit and drift is likely to have allowed the attitude to cross the threshold. No hardware issues have been identified as contributing to safemode entry. Comm passes for Recovery 20:00-22:50z (4:00-6:50pm EDT) 00:20-02:55z (8:20-10:55pm EDT) S/C Loads good through: 2015:265:14:05 NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 10 Supports Completed (Total time: 26.5 hours) Radiation: Quiet to unsettled. Solar Activity Forecast: Solar activity is expected to be low with a chance for M-class flares on 21 Sep, 22 Sep, 23 Sep. MP: SEP2115 replan is in work. Eng: no issues GOT: no issues Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 17673 SNhunt275 ACIS-S NONE 17526 Cygnus A - E Hotspot ACIS-I NONE 17309 UDS ACIS-I NONE 17303 UDS ACIS-I NONE 16756 SN 1987A ACIS-S HETG Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 265/1135-1350 1235 1335 DSS-15 GOLDSTONE 0835-0935 EDT, Tue 22 Sep 265/2035-2250 2135 2235 DSS-54 MADRID 1735-1835 EDT, Tue 22 Sep SNAPSHOT summary: ---------------- UTC 2015:264:20:12:08 (Sep21) f_ACE 8.89e+01 F_CRM 0.00e+00 Kp 3.3 R km 128574D OBT 2015:264:20:11:27 CTUVCDU 219213 OBC s/w SAFE FMT5_NORM CPEstat SAFE OBT 559253487.33 ONLVCDU 5121352 OBC Errs 0 OBSID 0 EPState SUN SIM TTpos -99616 HETG Angle 78.34 PCADMODE STBY RA 242.571 Bus V 28.52 SIM FApos -535 LETG Angle 76.84 PCONTROL AUTO Dec -62.297 Bus I 26.97 AOFSTAR BRIT Roll 274.825 ACA Object SSSSSSSS Dither DISA HRC-I HV OFF ACA ImFunc SSSSTTTT Dith Yang 0.00 Yaw Rate -0.54 HRC-S HV ON ACA CCD Temp 25.6 Dith Zang 0.00 Pitch Rate -0.25 SHLD HV 0.0 ACA Int Time 0.705 Roll Rate 0.68 EVT RT 0 AOACSTAT OK FSS SunBeta SUN SHLD RT 0 FSS Alfa -0.45 Batt 1 SOC 100.00% Avg HRMA Temp 70.90 FSS Beta -20.15 Batt 2 SOC 100.00% ACIS Stat7-0 66 Avg OBA Temp 62.24 SA Resolv 109.89 Batt 3 SOC 100.00% Cold Rad -127.9 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -82.0 OBA Trng Fault NFLT +Y SA Amps 13.14 RadMon DISA HRMA power 85.90 SCS 128 DISA -Y SA Amps 13.14 EPHIN Geom VLD OBA power 78.70 SCS 129 DISA +Y SA Temp 114.20 E150 2940928.0 SCS 130 DISA -Y SA Temp 114.20 E300 478208.0 Roll Mom. 0.024 SCS 131 DISA E1300 1992.0 Pitch Mom. -0.044 SCS 132 DISA EPH A-Leak 1.0200 UpLCmdAcc 611 Yaw Mom. -0.105 SCS 133 DISA EPH B-Leak 0.0000 Cmd Rej A 70 PMTANKP 130.948 SCS 107 DISA EPH temp 161.30 Gyro 2 Curr 1 0.00 EPH 27V 26.96 M Unload MON Gyro 2 Curr 2 0.00 Roll Bias -0.6765 TSC Move STOP Prop. line 03 136.33 Pitch Bias 0.2458 CTX A PWR 36.38 FA Move STOP Prop. line 04 127.54 Yaw Bias 0.5425 CTX A Volts 3.52 OTG Move DISA Currently scheduled FPSI, OTG : HRC-S NONE Estimated Kp : 2.33 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 1.71e+01 GOES-15 P2 flux, in RADMON P4GM units : 0.24 GOES-13 P2 flux, in RADMON P4GM units : 0.92 GOES-15 P5 flux, in RADMON P41GM units : 0.15 GOES-13 P5 flux, in RADMON P41GM units : 0.19 GOES-13 E > 2.0 MeV flux (p/cm^2-s-sr) : 215.0 Orbit Start Time : 2015:263:01:29:01 Geocentric Distance (km), Orbit Leg : 128686 D CRM Region : 2 (Magnetosheath) External Proton Flux (p/cm^2-s-sr-MeV) : 8.6858e+02 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.0000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 9.5325e+09 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 6.4697e+09