See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L7924. Start at 091:13:00 GMT PLAN ---- Start in radiation zone Then: 2021:091:18:32:25 RADMON Enable 2021:091:18:56:44 Obsid: 23477 SI: ACIS-S (32 ksec) Target: M51 2021:092:03:53:38 Grating: LETG 2021:092:04:37:38 Obsid: 22961 SI: HRC-S (25 ksec) Target: PSR J0821-4300 2021:092:11:56:48 Obsid: 23385 SI: HRC-S (28 ksec) Target: TW Hya NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 4 Supports completed in the last 24 hours (total time: 8.7 hours) 3 SSR dumps Loads good through: 2021:097:04:00:02 2 DSN DRs: - C115585, DSS-36, S-Band transmitter declared RED, Feed Mirror Drive failure. Scheduled a support with DSS-24 to go between two DSS-36 supports to mitigate an SSR rollover. - C115586, DSS-36, four minutes late to be on point, Antenna Drive issue. Station was able to clear issue and get to point within 4 minutes. Radiation: Solar activity is expected to be very low on days one, two, and three (01 Apr, 02 Apr, 03 Apr). MP: Apr0521A loads were approved yesterday. Eng: No issues. GOT: No issues. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 23384 TW Hya HRC-S LETG 23416 2MASS J12150885+4843574 ACIS-S NONE 22703 SNR 1987A HRC-I NONE Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 091/1130-1315 1215 1300 DSS-24 GOLDSTONE 0815-0900 EDT, Thu 1 Apr 091/1635-1850 1735 1835 DSS-36 CANBERRA 1335-1435 EDT, Thu 1 Apr 092/0250-0505 0350 0450 DSS-56 MADRID 2350-0050 EDT, Thu 1 Apr 092/1150-1405 1250 1350 DSS-26 GOLDSTONE 0850-0950 EDT, Fri 2 Apr 092/1840-2055 1940 2040 DSS-36 CANBERRA 1540-1640 EDT, Fri 2 Apr SNAPSHOT summary: ---------------- UTC 2021:091:12:59:01 (Apr 1) f_ACE 2.23e+01 F_CRM 1.00e+00 Kp 0.7 R km 42880A OBT 2021:091:12:56:15 CTUVCDU 4146943 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 733668975.88 ONLVCDU 4146936 OBC Errs 0 OBSID 46449 EPState SUN SIM TTpos -99616 HETG Angle 77.96 PCADMODE NPNT RA 189.799 Bus V 28.20 SIM FApos -535 LETG Angle 76.46 PCONTROL NPNT Dec -8.602 Bus I 23.66 AOFSTAR GUID Roll 346.228 ACA Object SSSSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang -2.49 Yaw Rate 0.30 HRC-S HV ON ACA CCD Temp -7.3 Dith Zang 6.45 Pitch Rate 0.01 SHLD HV 0.0 ACA Int Time 1.698 Roll Rate 0.38 EVT RT 255 AOACSTAT OK FSS SunBeta NSUN SHLD RT 0 FSS Alfa -49.57 Batt 1 SOC 100.00% Avg HRMA Temp 72.67 FSS Beta -49.72 Batt 2 SOC 100.00% ACIS Stat7-0 67 Avg OBA Temp 66.16 SA Resolv 176.01 Batt 3 SOC 100.00% Cold Rad -120.7 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -82.0 OBA Trng Fault NFLT +Y SA Amps 11.79 RadMon DISA HRMA power 62.90 SCS 128 ACT -Y SA Amps 11.60 OBA power 35.10 SCS 129 INAC +Y SA Temp 115.12 SCS 130 ACT -Y SA Temp 115.12 Roll Mom. 18.294 SCS 131 ACT Pitch Mom. -7.782 SCS 132 INAC Ephin Temp 0.0000 UpLCmdAcc 27496 Yaw Mom. 1.146 SCS 133 ACT EIO Temp 0.0000 Cmd Rej A 223 PMTANKP 132.547 SCS 107 INAC EPH temp 158.47 IRU2G2 curr 112.80 M Unload MON IRU2G1 curr 91.20 Roll Bias 0.5925 TSC Move STOP Prop. line 03 148.52 Pitch Bias -2.6367 CTX B PWR 36.69 FA Move STOP Prop. line 04 107.02 Yaw Bias -1.5562 CTX B Volts 3.54 OTG Move DISA UTC 2021:091:12:59:01 (Apr 1) f_ACE 2.23e+01 F_CRM 1.00e+00 Kp 0.7 R km 42880A Currently scheduled FPSI, OTG : HRC-S NONE Estimated Kp : 0.7 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 2.16e+01 GOES-R P4 flux, in RADMON P4GM units : 0.039 GOES-R P7 flux, in RADMON P41GM units : 0.020 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 4.0 Orbit Start Time : 2021:091:10:09:01 Geocentric Distance (km), Orbit Leg : 42032 A CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 4.2230e+03 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.0000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 7.5234e+06 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 0.0000e+00