SOT Shift Report 2009-07-21 L3652 Duration: 21 July 2009 07:00 EDT - 21 July 2009 9:15 EST (Day 202) 21 July 2009 11:00 GMT - 21 July 2009 13:15 GMT SOT Lead: Bill Podgorski ======================================== Plan ---- Running JUL2009A on descending leg. Observing 'RS Ophiuchi' (obsid 09952) with ACIS-S. Continuing to work on the MUPS Tank Pressure Anomaly: - MUPS tank Pressure continues an erratic, slow decay. - Momentum and temperature still appear to be completely nominal - Looking at three possible causes: - External leak of propellant - Internal tank leak between pressurant and propellant, through bladder - Faulty pressure transducer - Engineering investigations of all possible causes under way - Two possible actions are in planning stage: - Close the B side iso-valve to see if external leak is on the B side propulsion system (a test first) - Modify the safing actions in SCS 31 to use the A side propulsion system for safing actions. - Working to get extra comm for B side iso valve test There will be a status telecon later today. . -------------------------------------------------------------------- JUL2009A: 10389 0 NGC3894 2009:201:05:06:15.618 39.0 ACIS-S NONE 09952 0 RS Ophiuchi 2009:201:16:33:06.192 130.2 ACIS-S NONE T_E75 CAL-ER (56943) 2009:203:05:40:43.619 0.1 -- -- GG_75 CAL-ER (56942) 2009:203:09:30:00.000 0.0 -- -- T_X76 CAL-ER (56941) 2009:203:16:20:06.298 0.1 -- -- 10412 0 ZwCl 1829.3+6912 2009:203:19:33:41.298 35.0 ACIS-I NONE 10633 2 Vega 2009:204:05:39:01.813 2.0 HRC-I NONE 10634 2 Vega 2009:204:06:20:58.060 2.0 HRC-S NONE Events ------ BOT EOT Notes from 9am Meeting ---------------------- Ops: - Remarks: - Current Configuration (as of 202/1300): In Radiation Zone NO Current SI ACIS-S Grating NONE Observation ID 09952 Target RS Ophiuchi Altitude 129.4 kkm Desc Radmon Disable 203/04:48z Next Radiation Zone 203/05:41z to 203/16:20z - Supports: 3 Supports Completed (3 34 Meter, 0 26 Meter) - SCS's Loaded: CL205:0401 128 JUL2009A Good through: 2009:206:06:17:14.000 - CAP's / Procedures * CAP Number: * Time: * Title: * Notes: DSN DR's: * DR #: * Station: * Problem: * Cause: * Action: - OPS DR's: * Problem: * Impact: * Cause: * Resolution: - TECH DR's: * Problem: * Impact: * Cause: * Resolution: MP: - July 27 loads out later today. Eng: - SOT/Radiation: - ACE solar protons are very low (< 100). - Solar Activity Forecast: Solar activity is expected to be very low. - Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled, with isolated active levels, on day one (21 July) as an anticipated coronal hole high-speed stream (CH HSS) becomes geoeffective. Quiet to unsettled conditions are expected on day two (22 July) as the CH HSS begins to wane. Activity is expected to decrease to quiet levels on day three (23 July). DATA: - QL's today: 10389 0 NGC3894 2009:201:05:06:15.618 39.0 ACIS-S NONE OK GOT/IST: - Dropouts on T1 line yesterday, were reported to vendor. Other: Snapshot -------- UTC 2009:202:09:32:10 (Jul21) f_ACE 0.00e+00 F_CRM 8.63e+07 Kp 1.3 R km 140094D OBT 2009:202:09:29:08 CTUVCDU 14986879 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 364555748.29 ONLVCDU 14986872 OBC Errs 0 OBSID 9952 EPState SUN SIM TTpos 75623 HETG Angle 79.09 PCADMODE NPNT RA 267.559 Bus V 29.77 SIM FApos -467 LETG Angle 77.21 PCONTROL NPNT Dec -6.685 Bus I 27.98 AOFSTAR GUID Roll 236.501 ACA Object FFFSSSSS Dither ENAB HRC-I HV ON ACA ImFunc TTTTTTTT Dith Yang -7.89 Yaw Rate -0.01 HRC-S HV OFF ACA CCD Temp -19.6 Dith Zang -6.52 Pitch Rate -0.13 SHLD HV 8.0 ACA Int Time 1.698 Roll Rate 0.18 EVT RT 0 AOACSTAT OK FSS SunBeta NSUN SHLD RT 24 FSS Alfa 17.61 Batt 1 SOC 100.00% Avg HRMA Temp 70.63 FSS Beta -49.72 Batt 2 SOC 100.00% ACIS Stat7-0 65 Avg OBA Temp 53.60 SA Resolv 145.78 Batt 3 SOC 100.00% Cold Rad -127.9 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -84.4 OBA Trng Fault NFLT +Y SA Amps 13.14 RadMon ENAB HRMA power 101.80 SCS 128 ACT -Y SA Amps 14.30 EPHIN Geom VLD OBA power 73.30 SCS 129 ACT +Y SA Temp 111.74 E150 53.0 SCS 130 ACT -Y SA Temp 112.04 E300 87.0 Roll Mom. 0.814 SCS 107 ACT E1300 82.0 Pitch Mom. 0.378 UpL Cmd Acc 47025 EPH A-Leak 1.0200 Yaw Mom. 9.500 Cmd Rej A 182 EPH B-Leak 1.0200 EPH temp 102.38 Gyro 2 Curr 1 105.60 Roll Bias -0.9791 EPH 27I 7.27 M Unload MON Gyro 2 Curr 2 110.40 Pitch Bias -2.0190 TSC Move STOP Prop. line 03 87.74 Yaw Bias -1.1053 CTX A PWR 36.38 FA Move STOP Prop. line 04 63.72 CTX A Volts 3.52 OTG Move DISA Explanation Current Data: UTC 2009:202:11:01:00 (Jul21) f_ACE 0.00e+00 F_CRM 8.64e+07 Kp 1.7 R km 138538D Currently scheduled FPSI, OTG : ACIS-S NONE Estimated Kp : 1.67 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 1.83e+01 GOES-10 P2 flux, in RADMON P4GM units : 0.00 GOES-12 P2 flux, in RADMON P4GM units : 0.00 GOES-10 P5 flux, in RADMON P41GM units : 0.02 GOES-12 P5 flux, in RADMON P41GM units : 0.03 Orbit Start Time : 2009:200:21:09:01 Geocentric Distance (km), Orbit Leg : 138578 D CRM Region : 1 (Solar_Wind) External Proton Flux (p/cm^2-s-sr-MeV) : 1.83000000000e+01 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 1.83000000000e+01 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 3.78846138450e+09 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 8.64091245000e+07