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Am1weekly_2025_340_2025_346

MODIS IOT Terra Weekly Report
Mission Operations Days: 2025/340 through 2025/346
December 6, 2025 00:00:00 GMT to December 12, 2025 23:59:59 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 (285K); 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

  • 10W Lamps - 1, 4 (functional)
  • 10W Lamps - 2, 3 (non-functional)
  • 1W Lamps - 1, 2 (functional)
 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

  • CP07 to Survival Mode - No SDD to closed command (1 patch)
  • CP07 to Safe Mode - No FR OFF Command (1 patch)
  • CP07 to Safe Mode - No SDD to closed command (1 patch)
  • CP07 to Science Mode - Turn on FRB instead of FRA (1 patch)
  • CP07 to Outgas and Science Mode - Turn on FRB instead of FRA (1 patch)
  • FR Error Counting and Statistics (2 patches)
  • FR 1000ms time code patches (3 patches)
  • FR Band 5 Gain Change (20 commands)
  • FR BB Ideal Output Values (3 patches)
  • FR A EEPROM KME Fast 1 word patch (1 patch)
  • FR B EEPROM KME Fast 1 word patch (1 patch)
 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 6, 2025
--
None
 
Sunday, December 7, 2025
--

Lunar Roll Maneuver (-8.5332)

2025/341 17:00:31 ATC MOD_OA04_NIGHT_RATE.1 (1:53 early)

2025/341 17:38:11 – 17:41:57 ATC MOD_OA08_ROLL_MAN.3 

2025/341 17:53:24 ATC MOD_OA03_DAY_RATE.2 (1:53 late)

 
Monday, December 8, 2025
--
None
 
Tuesday, December 9, 2025
--
None
 
Wednesday, December 10, 2025
--
None
 
Thursday, December 11, 2025
--
None
 
Friday, December 12, 2025
--
None
 
This Week's Scheduled MODIS Activities Not Completed:
---
None

This Month's MODIS Events:
---
December's routine activities include a regular SD/SDSM calibration (2025/357), a Lunar Roll Calibration (2025/341), and a SRCA Radiometric Calibration (2025/335). 
 
Next Week's MODIS Events:
---  

None

 
Maneuvers:
---
The Terra Lunar Roll maneuver took place on Sunday, December 7, 2025 (2025/341).
 
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 nominally maintained at 285K and the Solar Diffuser Door at the Screened position.
 
Note that the BlackBody will be maintained at 285K.
 
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.
 

Limited Life Item Status:

SRCA 10W Lamp #1: 411.6 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: 157.5 of 500 hours

SRCA 1W Lamp #1: 599.3 of 4000 hours
SRCA 1W Lamp #2: 333.5 of 4000 hours

Solar Diffuser Door:    2148 of 3022 Movements
Nadir Aperture Door:   544 of 1316 Movements
Space View Door:          449 of 1316 Movements
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