Mission Operations Days: 2011/344 through 2011/350
December 10, 2011 20:00:00 GMT to December 16, 2011 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) |
||
|---|---|---|
| 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, December 10, 2011
None
Sunday, December 11, 2011
None
Monday, December 12, 2011
None
Tuesday, December 13, 2011
None
Wednesday, December 14, 2011
None
Thursday, December 15, 2011
Lunar Roll Maneuver (-3.3333 degrees)
2011/349 04:51:16 ATC MOD_OA04_FR_NIGHT_RATE.1 (03:23 early)
2011/349 05:13:49-05:20:35 ATC MOD_OA08_ROLL_MAN.3
2011/349 05:47:17 ATC MOD_OA03_FR_DAY_RATE.2 (03:23 late)
2011/349 09:58:00 ATC MOD_OA03_DAY_RATE.2
OA-03: Formatter to Day Rate (night ground track)
2010/349 10:18:00 ATC MOD_OA04_NIGHT_RATE.1
OA-04: Formatter to Night Rate (return to normal night rate)
Friday, December 16, 2011
None
This Week's Scheduled MODIS Activities Not Completed:
None
This Month's Upcoming MODIS Events:
Calibrations for December will include an SRCA Radiometric (DOY 339), an SDSM Screened (DOY 340), a Lunar Roll (DOY 349), a Nighttime Day Mode Observation (DOY 349), an SRCA Spatial (DOY 353), and an SDSM Screened (DOY 354).
Monday, December 19, 2011
2011/353 20:48:44-20:49:13 MOD_SRCA_9_8_2_SETUP_CC.1
SRCA setup activity using 10W lamps 1 & 4 and 1W lamp 5 in constant current feedback mode
2011/353 20:51:44-21:40:02 MOD_OA23_SRCA_FULL_SPAT.1
OA-23: SRCA Full Spatial Calibration
Data Collect from 21:08:01-21:38:47 (centered on S/C Night)
S/C Night 21:06:45-21:40:19.
Tuesday, December 20, 2011
2011/354 20:44:44-20:53:32 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4
OA-16: SD/SDSM screened side A, no door movement.
Maneuvers:
There will be Terra Drag Make Up Maneuver (DMU) #65 on DOY 354 (12/20/2011). Maneuver start time is set for 354/22:03:00 and the maneuver end time is set for 354/22:03:30. The projected loss of pointing accuracy times are 354/22:33:00 - 00:33:30.
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. At this point in time the Terra Battery Anomaly is not affecting science data collection and all MODIS systems are nominal. There has been little if any impact to operations since the issue began. All operations are nominal.
http://jupiter02.gsfc.nasa.gov/
Limited Life Item Status:
SRCA 10W Lamp #1: 300.9 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: 100.6 of 500 hours
SRCA 1W Lamp #1: 582.3 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