Apr_23_2002_L1006.txt Shift L1006 Start at 2002:113:11:30:00 GMT = 2002 Apr 23 7:30am EDT End 2002 Apr 23 10:30am EDT SOT shift report 2002-04-23 L1006 See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or Apr_23_2002_L1006.txt SOT Lead Bill Podgorski SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Loads still stopped due to high radiation. In radiation zone, before perigee passage. Radiation Discussion: E-mail load review of APR2302B in process, load should be ready by noon. First commanding in APR2302B is at 113:2130. Plan is to uplink and activate at start of today's 4:35EDT pass (113:2035-2135), after assessment of radiation situation. Current radiation situation: - EPHIN levels below triggers during last pass (before radiation zone entry): E1300=4.2/10=.42; P4GM=75/300=.25(GOES=.28->.17@11:45); P41GM=6.6/8.5=.78(GOES=.90->.55@11:45). - GOES rates continue to decline - Shock passed at about 113:0200, soft protons decreasing slowly since then. Flux now at 51,0000 113:1400). APR23 load includes ACIS/HETG and HRC observations which reduce level of radiation exposure for ACIS, should be OK to start observations if trends continue. Rob will assess fluence expected for next orbit and present at 4:30 telecon. TELECON: Radiation telecon at 4:30EDT today (Tuesday, April 23). on 405-244-5060 pin 1165# Assess radiation and give decision on APR2302B start. No COMM this shift Seq # ObsID It Target start time SI Grat RA dec roll slew ---------------------------------------------------------------------------------------------------------- APR2302B: Replan load 400247 03492 00 1 RX J170930.2-263927 2002:113:21:58:00.000 5.0 ACIS-S NONE 257.3908 -26.6727 81.29 0.33 ---- I2526 00 CAL-ER 2002:113:23:58:16.495 0.0 -- -- 114.0000 -64.0000 257.83 96.49 ORBITAL EVENTS: 2002:112:06:24:25.119 374 EAPOGEE ORBIT APOGEE 2002:113:07:21:45.158 374 EE1RADZ0 ELECTRON1 RADIATION ENTRY0 2002:113:14:08:51.015 374 EPERIGEE ORBIT PERIGEE 2002:113:18:35:45.158 375 XE1RADZ0 ELECTRON1 RADIATION EXIT0 2002:114:21:52:03.208 375 EAPOGEE ORBIT APOGEE 2002:116:05:03:02.104 375 EE1RADZ0 ELECTRON1 RADIATION ENTRY0 2002:116:05:35:14.788 375 EPERIGEE ORBIT PERIGEE 2002:116:09:51:02.104 376 XE1RADZ0 ELECTRON1 RADIATION EXIT0 2002:117:13:19:04.582 376 EAPOGEE ORBIT APOGEE 2002:118:14:17:48.416 376 EE1RADZ0 ELECTRON1 RADIATION ENTRY0 2002:118:21:02:08.143 376 EPERIGEE ORBIT PERIGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift 113:1130 Status at last COMM was as expected. End of shift 113:1430 NOTES/ISSUES/PROBLEMS --------------------- 1) Status at last COMM: UTC 2002:113:08:41:25 (Apr23) f_ACE 7.08e+04 F_CRM 0.00e+00 Kp 6.3 R km 59181D OBT 2002:113:08:37:58 CTUVCDU 16490367 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 135938278.62 ONLVCDU 16490352 OBC Errs 0 OBSID 3476 EPState SUN SIM TTpos -99616 HETG Angle 79.46 PCADMODE NPNT RA 257.392 Bus V 30.24 SIM FApos -535 LETG Angle 77.96 PCONTROL NPNT Dec -26.675 Bus I 27.48 AOFSTAR GUID Roll 81.620 ACA Object SSSSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc NNNTTTTT Dith Yang -7.61 Yaw Rate -0.01 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang 4.04 Pitch Rate 0.17 OBSMode NEXT ACA Int Time 1.698 Roll Rate 0.15 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.61 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta -44.46 Batt 2 SOC 100.00% ACIS Stat7-0 67 Avg OBA Temp 50.97 SA Resolv 132.32 Batt 3 SOC 100.00% Cold Rad -125.5 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -82.0 OBA Trng Fault NFLT +Y SA Amps 13.33 RadMon DISA HRMA power 73.10 SCS 128 INAC -Y SA Amps 13.72 EPHIN Geom SMAL OBA power 139.60 SCS 129 INAC +Y SA Temp 112.66 E150 17609.8 SCS 130 INAC -Y SA Temp 113.89 E300 313.6 Roll Mom. 13.013 SCS 107 DISA E1300 37.1 Pitch Mom. -15.624 UpL Cmd Acc 7906 EPH A-Leak 1.0200 P4GM 83.5 Yaw Mom. -8.455 Cmd Rej A 233 EPH B-Leak 0.2600 P41GM 6.9 Explanation Current Data: UTC 2002:113:14:09:02 (Apr23) f_ACE 5.58e+04 F_CRM 0.00e+00 Kp 3.7 R km 25754D Currently scheduled FPSI, OTG : HRC-S NONE Costello Kp : 3.67 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 5.58e+04 GOES-8 P2 flux, in RADMON P4GM units : 0.11 GOES-10 P2 flux, in RADMON P4GM units : 0.10 GOES-8 P5 flux, in RADMON P41GM units : 0.44 GOES-10 P5 flux, in RADMON P41GM units : 0.38 Orbit Start Time : 2002:110:22:44:01 Geocentric Distance (km), Orbit Leg : 25754 D CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 0.00000000000e+00 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.00000000000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 4.47656975064e+09 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 0.00000000000e+00 HRC IM PS = OFF SP PS = ON Stp 43/54 Shield 1 HV = OFF Shield 2 HV = OFF Valid Event Rate 1 = 0 Valid Event Rate 2 = 0 Shield Event Rates = 0 ACIS FP Temp = -119.5 DEA Pwr = 32.2 DPA Pwr = 12.1 Science State = Science Idle 2) Notes from 9:00am meeting: Operations (Darrel): - 3 supports last 24 hrs, 2 34m, 1 26m - COMM problem with DSS-66 near end of last pass, JPL lost all communications with site. Re-eatablished soon after loss. Dump from S/C was completed but was slow to arrive here. - No new LS's or CAPs Mission Planning (Ken): - Minor issues with APR2302A, re-issued APR2302B for e-mail load review. - Added a COMM pass later on today (113:2035-2135) to allow assessment of radiation levels and uplink/start APR2302B load (rad permitting). - Working on alternative plan (APR24) which would start 12 hrs later than APR23. - Have started work on APR29 loads. S/C Engineering(Rino): - All is OK SOT(Bill): - See above for radiation discussion. DSOPS(Joy): - No quick looks GOT(George): - A/C in control room failed, will ba back on soon (is on at 10:30) Meetings/events: - 8:30am, NASA quarterly (all day plus half day tomorrow) - CAP review, later on today 3) Quick look data: Seq # ObsID It Target start time SI Grat Comment ----------------------------------------------------------------------------------------------------------