Mission Operations Days: 2003/186 to 2003/192
July 05, 2003 00:00:00 GMT to July 11, 2003 00:00:00 GMT
The spacecraft did yaw -90 degrees on DOY 2003/191, however it did *not* perform the Inclination Burn.
See the Maneuvers section below for details.
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 | New 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, July 5, 2003
None
Sunday, July 6, 2003
None
Monday, July 7, 2003
None
Tuesday, July 8, 2003
None
Wednesday, July 9, 2003
2003/190 20:18:31-20:27:19 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4 OA-16: SD/SDSM Screened - A Side, No Door Movement
Thursday, July 10, 2003
None
Friday, July 11, 2003
None
This Week's Scheduled MODIS Activities Not Completed:
Tuesday, July 8, 2003
Contingency for Terra Inclination Maneuver; the commands in this activity are inhibited
2003/189 16:16:23-16:18:04 ATC MOD_CLOSE_NAD_SVD.1 Closes MODIS Nadir and Space View doors
Thursday, July 10, 2003
Contingency for Terra Inclination Maneuver; the commands in this activity are inhibited
2003/191 16:03:50-16:05:31 ATC MOD_CLOSE_NAD_SVD.1 (101 seconds prior to S/C day, orbit 18936)
Upcoming MODIS Events:
July calibrations will include weekly SDSM, an SRCA Full Radiometric, semi-monthly SRCA 10 Watt radiometric, an SRCA Full Spatial, an SRCA Full Spectral, a blackbody heating, and a lunar roll calibration.
Tuesday, July 15, 2003
2003/196 21:20:20-21:29:08 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4 OA-16: SD/SDSM Screened - A Side, No Door Movement
2003/196 22:06:25-22:30:55 ATC MOD_OA20_SRCA_10W_RAD_A.3 OA-20: SRCA 10W Continuous Radiometric - A Side, Using Lamp #1 Data collection is from 22:25:55-22:30:55
Friday, July 18, 2003
MODIS Lunar Calibration/Roll 2003/199 02:12:37 ATC MOD_OA03_FR_DAY_RATE (normal time) OA-03: Formatter Rate to DAY
2003/199 02:58:38 ATC MOD_OA03_FR_NIGHT_RATE (03:23 early) OA-03: Formatter Rate to NIGHT
2003/199 03:14:49-03:21:35 ATC MOD_OA08_ROLL_MAN OA-08: Lunar Roll Observation
2003/199 03:21:35 ATC MOD_OA03_FR_DAY_RATE (03:23 late) OA-03: Formatter Rate to DAY
2003/199 03:54:53 ATC MOD_OA03_FR_NIGHT_RATE (normal time) OA-03: Formatter Rate to NIGHT
Tuesday, July 22, 2003
2003/203 21:26:31-21:35:19 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4 OA16: SD/SDSM Screened - A Side, No Door Movement
Wednesday, July 23, 2003
2003/204 09:00:00 ATC MOD_OA26_BB_270K_A.1 Set blackbody temperature to 270K on the A Side
Thursday, July 24, 2003
2003/205 03:00:00 ATC MOD_OA26_BB_280K_A.1 Set blackbody temperature to 280K on the A Side
2003/205 07:00:00 ATC MOD_OA26_BB_285K_A.1 Set blackbody temperature to 285K on the A Side
2003/205 10:00:00 ATC MOD_OA26_BB_290K_A.1 Set blackbody temperature to 290K on the A Side
2003/205 14:00:00 ATC MOD_OA26_BB_315K_A.1 Set blackbody temperature to 315K on the A Side
2003/205 14:00:30 ATC MOD_OA26_BB_DCYCLE_FULL.1 Set blackbody heater duty cycle to FULL
2003/205 17:00:00 ATC MOD_OA26_BB_270K_A.1 Set blackbody temperature to 270K on the A Side
2003/205 17:00:30 ATC MOD_OA26_BB_DCYCLE_THIRD.1 Set blackbody heater duty cycle to THIRD
Friday, July 25, 2003
2003/206 13:00:00 ATC MOD_OA26_BB_290K_A.1 Set blackbody temperature to 290K on the A Side
Maneuvers:
The next MODIS lunar calibration will be on July 18, 2003 (DOY 2003/199). The roll angle will be -10.3692 degrees, and data collection will be from 03:14:57-03:21:27 GMT.
Three Terra inclination maneuvers were originally planned for July 8, August 5, and August 7, 2003. For each inclination maneuver, a contingency activity will be scheduled in the stored command load to close the MODIS Space View and Nadir doors prior to entering daylight following the maneuver, but the commands will be inhibited after the spacecraft successfully returns to a nominal attitude. See below for a report of the progress of the Inclination Maneuvers.
The July 8, 2003 (DOY 2003/189) Terra Inclination Maneuver was postponed. The cause was the unavailable TDRS Coverage for the maneuver contact. TDRS 275 had gone into safe mode the previous day, limiting contact coverage. The Inclination Maneuver was rescheduled to July 10, 2003 (DOY 2003/191).
The July 10, 2003 (DOY 2003/191) Terra Inclination Maneuver was aborted. The cause was the CRP (Command Return Processor) Unix machine rebooted itself just before the burn. Command and Telemetry data was lost for about 5 minutes while the CRP was restarting. Once the CRP was restarted there was not enough time to do the real time commanding. The stored commands then slewed the spacecraft back to its nominal pointing. There currently is no rescheduled date for the maneuver.
The times of the low fidelity pointing and yaw period for DOY 2003/192 are listed below.
2003/191 14:02:00 Low Fidelity Pointing
2003/191 15:33:45 -90 degree Yaw Start
2003/191 16:03:29 +90 degree Yaw End
2003/191 17:35:00 High Fidelity Pointing
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.
http://jupiter02.gsfc.nasa.gov/links/links.htm
Limited Life Item Status:
SRCA 10W Lamp #1: 213.4 of 500 hours
SRCA 10W Lamp #2: 159.5 of 500 hours
SRCA 10W Lamp #3: 168.7 of 500 hours
SRCA 10W Lamp #4: 62.2 of 500 hours
SRCA 1W Lamp #1: 562.0 of 4000 hours
SRCA 1W Lamp #2: 276.7 of 4000 hours
Solar Diffuser Door: 2146 of 3022 Movements
Nadir Aperture Door: 536 of 1316 Movements
Space View Door: 439 of 1316 Movements