Mission Operations Days: 2010/149 through 2010/155
May 29, 2010 20:00:00 GMT to June 04, 2010 20:00:00 GMT
Terra Spacecraft and MODIS Instrument Status:
AM-1 "Terra" is in Normal Mode PFM MODIS is in A-Side Nominal Science Mode (Cross Strapped with FR B) |
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Component | State(s) | Comment |
Blackbody | A On (290K); B Off | Nominal Science Mode |
Calibration Electronics | A On; B Off | Nominal Science Mode |
Control Processor | A On; B Off | Nominal Science Mode |
Nadir Door | Unlatched, Open | Nominal Science Mode |
Space View Door | Unlatched, Open | Nominal Science Mode |
Solar Diffuser Door | Unlatched, Screened | Permanent Configuration |
FDDI Formatter | A On; B Off | Nominal Science Mode |
FDDI Port | A On; B Off | Nominal Science Mode |
FIFO Memory | #1 & #2 On; #3 & #4 Off | Nominal Science Mode |
Format Processor | A Off; B On | Nominal Science Mode |
Power Supplies | #1 On, #2 Off | Nominal Science Mode |
PV VIS FPA | A On; B Off | Nominal Science Mode |
PV NIR FPA | A On; B Off | Nominal Science Mode |
PV SMIR FPA | A On; B Off | Nominal Science Mode |
PV LWIR FPA | A On; B Off | Nominal Science Mode |
PC LWIR FPA | A On; B Off | Nominal Science Mode |
RC Outgas Heaters | All 3 (CS, IS, OS) Off | Nominal Science Mode |
RC LWIR FPA Heater | On (83K) | Nominal Science Mode |
RC SMIR FPA Heater | Off | Nominal Science Mode |
Scan Assembly | A On; B Off | Nominal Science Mode |
SDSM | Off | Nominal Science Mode |
SRCA | Off
|
Nominal Science Mode |
PS1 Survival Heater | Enabled | Nominal Science Mode |
PS2 Survival Heater | Enabled | Nominal Science Mode |
Timing Generator | A On; B Off | Nominal Science Mode |
Flight Software | Rev BD + 11 sets of patches
|
Nominal Science Mode |
Inhibit Ids Set | none | Nominal Science Mode |
TMON 66 | Disabled | Nominal Science Mode |
TMON 67 | Disabled | Nominal Science Mode |
TMON 68 | Enabled | Nominal Science Mode |
TMON 69 | Disabled | Nominal Science Mode |
This Week's Completed MODIS Activities:
Saturday, May 29, 2010
2010/149 15:00:00 ATC MOD_OA26_BB_280K_A.2
Set blackbody temperature to 280K on the A Side
2010/149 19:00:00 ATC MOD_OA26_BB_285K_A.2
Set blackbody temperature to 285K on the A Side
2010/149 22:00:00 ATC MOD_OA26_BB_290K_A.2
Set blackbody temperature to 290K on the A Side
Sunday, May 30, 2010
2010/150 02:00:00 ATC MOD_OA26_BB_315K_A.2
Set blackbody temperature to 315K on the A Side
2010/150 02:00:30 ATC MOD_OA26_BB_DCYCLE_FULL.1
Set blackbody heater duty cycle to FULL
2010/150 05:00:00 ATC MOD_OA26_BB_270K_A.2
Set blackbody temperature to 270K on the A Side
2010/150 05:00:30 ATC MOD_OA26_BB_DCYCLE_THIRD.1
Set blackbody heater duty cycle to THIRD
Monday, May 31, 2010
2010/151 02:00:00 ATC MOD_OA26_BB_290K_A.2
Set blackbody temperature to 290K on the A Side
Tuesday, June 01, 2010
Lunar Roll Maneuver (-17.5373 degrees)
2010/152 16:22:47 ATC MOD_OA03_FR_NIGHT_RATE.1 (03:23 early)
2010/152 16:35:54-16:42:40 ATC MOD_OA08_ROLL_MAN.3
2010/152 17:18:52 ATC MOD_OA03_FR_DAY_RATE.2 (03:23 late)
Wednesday, June 02, 2010
None
Thursday, June 03, 2010
None
Friday, June 04, 2010
None
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Calibrations for June will include a Lunar Roll (DOY 152), a PV Ecal (DOY 171), an SRCA Radiometric (DOY 172), and an SDSM Screened (DOY 173).
Maneuvers:
Terra MODIS Lunar Calibration #97 was completed on DOY 152, Tuesday June 1, 2010. Data collection times were from 16:36:02 to 16:42:32 on DOY 152. The roll angle for this maneuver was -17.5373. Loss of pointing accuracy times for this maneuver were 152/15:30:00 – 18:03:09.
MODIS Anomalies:
None
General Instrument Comments:
MODIS is in Science Mode, using all A-side components, but cross-strapped to Formatter B, with the blackbody maintained at 290K and the Solar Diffuser Door at the Screened position.
MODIS Telemetry Trends:
Nominal telemetry trending is ongoing.
Non-MODIS Significant Events:
The EMOS mission status webpage (which includes instrument data loss records) can be found at the following URL. Note that a password is now required to access the EOS mission links web pages. There are directions at the URL below for how to obtain a username/password.
Following the Inclination Maneuver on DOY 286 (10/13/09), Terra experienced a Hex Bay Battery (BBAT) cell #50 failure and simultaneously (or close to same time) experienced a Battery Heater Control Electronic anomaly which prevents controlling the temperature for 5 of the 9 heater groups within BBAT. Cell #50 has failed and is non-recoverable. Battery temperatures have stabilized and battery cell temperatures are within an acceptable range. Terra has a robust power system with two 54 cell batteries that feed a power control system that maintains a stable 120V spacecraft power bus even if multiple cells fail. Terra is capable of continuing nominal operations with multiple cell failures. Science data acquisition has remained nominal throughout the anomaly and troubleshooting timeframe. Information will be updated periodically.
http://jupiter02.gsfc.nasa.gov/
Limited Life Item Status:
SRCA 10W Lamp #1: 293.5 of 500 hours
SRCA 10W Lamp #2: 172.1 of 500 hours
SRCA 10W Lamp #3: 190.3 of 500 hours
SRCA 10W Lamp #4: 98.5 of 500 hours
SRCA 1W Lamp #1: 578.4 of 4000 hours
SRCA 1W Lamp #2: 282.0 of 4000 hours
Solar Diffuser Door: 2146 of 3022 Movements
Nadir Aperture Door: 540 of 1316 Movements
Space View Door: 443 of 1316 Movements