See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html
Shift L7966.
Start at 133:13:00 GMT
PLAN
----
Start in radiation zone
Then:
2021:134:00:57:25 RADMON Enable
2021:134:01:18:20 Obsid: 24502 SI: ACIS-S (28 ksec) Target: SDSS J144231.37
2021:134:09:45:51 Obsid: 24343 SI: ACIS-I (28 ksec) Target: Cas J005311
NOTES/ISSUES/PROBLEMS
---------------------
From the 9am status meeting:
1 Supports Completed in the last 24 hours (Total time: 2.8 hours)
1 SSR dumps
Loads good through: 2021:139:05:54:05.000
CAP's / Procedures Run:
CAP # | Time | Title / Description / Notes
[893B] | 133/0148z | Disable SCS 29
SCS 29 controls the spacecraft loads during eclipse operations and will only
be active during the entire eclipse season. SCS 107 enables and actives SCS 29
as a contingency operation. SCS 29 should be disabled when outside of the
eclipse season. This CAP should be executed after the last eclipse of the
season, as directed by the EPS engineer. Additionally, this CAP may be used in
the event SCS 107 is executed outside of eclipse season.
[897A] | 133/0149z | Activate SCS 29
SCS 29 must be enabled and activated prior to the first eclipse of the season.
SCS 29 controls the spacecraft loads during eclipse operations and will be
active during the entire eclipse season. The only time SCS 29 will not be
active in eclipse season is during the actual eclipse.
Radiation:
Solar activity is expected to be very low with a chance for a C-class flares
on days one, two, and three (13 May, 14 May, 15 May).
MP:
May1721 loads were approved.
ENG:
Looking at recent telemetry it was noticed that the eclipse
flag had been triggered on a 2 second action and subsequent EPS action occurred.
There was no eclipse but this was triggered due to historically low
power draw on the solar panels where the spacecract thought an
eclipse was occurring. Clean up activity has been done to ensure
spacecraft is ready for next eclipse.
ENG will re-evaluate the k-constant that had been extended last year
to prevent events like this from occurring.
GOT:
No issues.
Quick look data:
----------------
OBSID Target Instr Grat
----- ------ ----- ----
23419 Cas J005311 ACIS-I NONE
25035 QSO J1610+1811 ACIS-S NONE
25038 4U1820-30 ACIS-S HETG
Next Comms:
-----------
Support (GMT) BOT EOT Station Site Track time (local)
--------------- ---- ---- --------- --------- -------------------------
133/1725-1940 1825 1925 DSS-34 CANBERRA 1425-1525 EDT, Thu 13 May
134/0130-0345 0230 0330 DSS-65 MADRID 2230-2330 EDT, Thu 13 May
134/0855-1055 0955 1040 DSS-26 GOLDSTONE 0555-0640 EDT, Fri 14 May
134/1720-1935 1820 1920 DSS-34 CANBERRA 1420-1520 EDT, Fri 14 May
SNAPSHOT summary:
-----------------
UTC 2021:133:02:01:02 (May13) f_ACE 2.39e+01 F_CRM 1.00e+00 Kp 2.7 R km 119782D
OBT 2021:133:01:58:00 CTUVCDU 1376767 OBC s/w NRML FMT2_NORM CPEstat SAFE
OBT 737258280.36 ONLVCDU 1376760 OBC Errs 0
OBSID 23420 EPState SUN
SIM TTpos 75624 HETG Angle 77.96 PCADMODE NPNT RA 240.188 Bus V 28.52
SIM FApos -467 LETG Angle 76.46 PCONTROL NPNT Dec -51.730 Bus I 22.63
AOFSTAR GUID Roll 20.982
ACA Object FFFSSSSS Dither ENAB HRC-I HV ON
ACA ImFunc TTTTTTTT Dith Yang 7.37 Yaw Rate 0.14 HRC-S HV OFF
ACA CCD Temp -9.9 Dith Zang 4.35 Pitch Rate -0.24 SHLD HV 8.0
ACA Int Time 1.698 Roll Rate 0.03 EVT RT 255
AOACSTAT OK FSS SunBeta NSUN SHLD RT 4844
FSS Alfa -42.57 Batt 1 SOC 100.00%
Avg HRMA Temp 72.17 FSS Beta -49.58 Batt 2 SOC 100.00% ACIS Stat7-0 64
Avg OBA Temp 62.63 SA Resolv 145.79 Batt 3 SOC 100.00% Cold Rad -120.7
OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -79.6
OBA Trng Fault NFLT +Y SA Amps 11.41 RadMon ENAB
HRMA power 62.90 SCS 128 ACT -Y SA Amps 11.02
OBA power 35.10 SCS 129 ACT +Y SA Temp 112.66
SCS 130 ACT -Y SA Temp 112.35
Roll Mom. 5.199 SCS 131 ACT
Pitch Mom. -5.231 SCS 132 ACT Ephin Temp 0.0000 UpLCmdAcc 52324
Yaw Mom. -1.492 SCS 133 ACT EIO Temp 0.0000 Cmd Rej A 5
PMTANKP 132.547 SCS 107 INAC EPH temp 152.81
IRU2G2 curr 110.40 M Unload MON
IRU2G1 curr 93.60 Roll Bias 0.6233 TSC Move STOP
Prop. line 03 127.54 Pitch Bias -2.6676 CTX B PWR 36.69 FA Move STOP
Prop. line 04 113.47 Yaw Bias -1.5607 CTX B Volts 3.54 OTG Move DISA
UTC 2021:133:13:01:02 (May13) f_ACE 2.67e+01 F_CRM 1.00e+00 Kp 1.3 R km 57360D
Currently scheduled FPSI, OTG : HRC-S NONE
Estimated Kp : 1.3
ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 2.67e+01
GOES-R P4 flux, in RADMON P4GM units : 0.039
GOES-R P7 flux, in RADMON P41GM units : 0.028
GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 4.0
Orbit Start Time : 2021:131:02:04:01
Geocentric Distance (km), Orbit Leg : 57649 D
CRM Region : 3 (Magnetosphere)
External Proton Flux (p/cm^2-s-sr-MeV) : 6.3299e+03
Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.0000e+00
External Proton Orbital Fluence (p/cm^2-sr-MeV) : 4.1655e+08
Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 2.5245e+08
Due to transition to GOES-16, what used to be P2 is now P4 and what used to be P5 is now P7
This message will dissappear in 01/31/2021