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Mission Operations Days: 2000/337 to 2000/343
December 02, 2000 00:00:00 GMT to December 08, 2000 00:00:00 GMT

Terra Spacecraft and MODIS Instrument Status:

Terra (AM-1) is in Normal Ops Mode
MODIS is in Science Mode - B Side
Component State(s) Comment
Blackbody A Off; B On (290 K) Nominal
Calibration Electronics A Off; B On Nominal
Control Processor A Off; B On Nominal
Nadir Door Unlatched, Open Nominal
Space View Door Unlatched, Open Nominal
Solar Diffuser Door Unlatched, Closed Nominal
FDDI Formatter A Off; B On Nominal
FDDI Port A On; B Off Nominal
FIFO Memory #1 & #2 Off; #3 & #4 On Nominal
Format Processor A Off; B On Nominal
Power Supplies #1 Off; #2 On Nominal
PV VIS FPA A Off; B On Nominal
PV NIR FPA A Off; B On Nominal
PV SMIR FPA A Off; B On Nominal
PV LWIR FPA A Off; B On Nominal
PC LWIR FPA A Off; B On Nominal
RC Outgas Heaters All Off (CS, IS, OS) Nominal
RC LWIR FPA Heater On (83 K) Nominal
RC SMIR FPA Heater Off Nominal
Scan Assembly A Off; B On Nominal
SDSM A Off; B Off Nominal
SRCA A Off; B Off Nominal
PS1 Survival Heater Enabled Nominal
PS2 Survival Heater Enabled Nominal
Timing Generator A Off; B On Nominal
Flight Software Rev BD + 1 set of patches
  • FR Error Counting and Statistics (2 patches)
Inhibit Ids Set None Nominal
TMONs Enabled 68 Nominal

This Week’s Completed MODIS Activities:

Saturday, December 2, 2000


Sunday, December 3, 2000


Monday, December 4, 2000


Tuesday, December 5, 2000


Wednesday, December 6, 2000

SD/SDSM activities
2000/341 21:27:26 ATC OA-16: SDSM SCREENED
2000/341 23:16:20 ATC OA-15: SDSM OPEN

Thursday, December 7, 2000


Friday, December 8, 2000


This Week's Scheduled MODIS Activities Not Completed:


Upcoming MODIS Events:

Friday, December 8, 2000


Saturday, December 9, 2000


Sunday, December 10, 2000


Monday, December 11, 2000


Tuesday, December 12, 2000


Wednesday, December 13, 2000


Thursday, December 14, 2000


Friday, December 15, 2000

Roll maneuver of –6.656 deg.
Starting at 2000/350 06:33:00 with loss of pointing knowledge.
Maneuver starts at 2000/350 08:03:54 and has a duration of 00:14:52.
Regain pointing knowledge at 2000/350 09:38:00.


December 5, drag makeup maneuver went nominally.
December 15 MODIS roll maneuver to –6.656 deg.

MODIS Anomalies:

No formatter anomalies have been detected since switching to B-side science operations. The MODIS IOT is continuing to monitor changes with the radiative cooler temperatures and focal plane power.

General Instrument Comments:

MODIS is in Science Mode on the B-side with the SVD and NAD open, operating with the Formatter Resolution Flight Software Patches (FRFSP). No new events have been witnessed by the FRFSP since the B-Side Transition on DOY 2000/304.

MODIS Telemetry Trends:

The Radiative Cooler intermediate stage temperature has slowly been increasing since approximately DOY 2000/240. During this time the LWIR focal plane heater margin has been decreasing. The IOT is continuing to trend these telemetry mnemonics.

Non-MODIS Significant Events:


Limited Life Item Status:

SRCA 10W Lamp #1: 176.3 of 500 hours
SRCA 10W Lamp #2: 137.6 of 500 hours
SRCA 10W Lamp #3: 146.8 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours

SRCA 1W Lamp #1: 556.3 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours

Solar Diffuser Door: 1471 of 3022 Movements
Nadir Aperture Door: 532 of 1316 Movements
Space View Door: 437 of 1316 Movements