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MODIS IOT Terra Weekly Report
Mission Operations Days: 2002/348 to 2002/354
December 13, 2002 20:00:00 GMT to December 18, 2002 20:00:00 GMT
Terra Spacecraft and MODIS Instrument Status:
|
AM-1 "Terra" is in Normal Mode PFM MODIS is in A-Side Science Mode (Cross Strapped with FR B) |
||
| Component | State(s) | Comment |
|---|---|---|
| Blackbody | A On (290 K); 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, Closed | Nominal Science Mode |
| 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 Off (CS, IS, OS) | Nominal Science Mode |
| RC LWIR FPA Heater | On (83 K) | 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 + 9 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 14, 2002None
Sunday, December 15, 2002None
Monday, December 16, 2002
2002/350 21:02:00-21:15:11 ATC MOD_OA16_SD_SCREEN_FXD_SUN_A.1
OA-16: SD/SDSM Screened - SDSM Fixed at SUN View - A Side
2002/350 22:40:53-22:54:04 ATC MOD_OA15_SD_OPEN_FIXED_SD_A.1
OA-15: SD/SDSM Opened - SDSM Fixed at SD View - A Side
None
Wednesday, December 18, 2002None
Thursday, December 19, 2002None
Friday, December 20, 2002None
This Week’s Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
December calibrations will include bi-weekly SD/SDSM events, an SRCA Full Radiometric, and a PV Electronics Calibration.
Two new SRCA calibrations will be performed in the near future; one of these new activities will use the “backup” lamps in the SRCA Spherical Integrating Source (SIS) for the first time on orbit.
Maneuvers:
The next Terra MODIS Lunar Calibration via roll maneuver will be on December 24th, 2002 (2002/358). The roll angle will be -3.3484 degrees and the data collection period will be from 06:50:16 to 06:56:46 GMT.
The next Terra drag make-up maneuver is being planned for December 18th, 2002.
An additional set of 2 days of six yaw maneuvers each day to facilitate SD/SDSM “Screened” calibrations is being scheduled for January 8-9, 2002.
The Terra Deep Space Calibration Maneuver is still postponed.
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.
MODIS Telemetry Trends:
Nominal telemetry tracking is taking place. A slight increase in the radiative cooler intermediate stage temperature has been observed along with a decrease in the focal plane heater power usage. These telemetry points will be closely monitored for additional changes over the next several weeks.
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.
http://jupiter02.gsfc.nasa.gov/links/links.htmLimited Life Item Status:
Note: The lamp hours and door uses have been recomputed based on a detailed review of early on-orbit activities. Some values have changed slightly.
SRCA 10W Lamp #1: 204.8 of 500 hours
SRCA 10W Lamp #2: 155.3 of 500 hours
SRCA 10W Lamp #3: 164.5 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 560.6 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 2043 of 3022 Movements
Nadir Aperture Door: 536 of 1316 Movements
Space View Door: 439 of 1316 Movements
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Last Update: Thursday, 27-Feb-2003 13:46:12 EST
