These events are for 2005 through 2006. See links below for events in earlier years
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| 0611Z | 07 Jan 2005 (007) | ERO Maneuver | A trim maneuver of 12 mm/sec @ 0 deg |
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1450Z ---- |
18 Jan 2005 (018) 21 Jan 2005 (021) |
Satellite CP Reset, Sat in Safe Mode |
Due to an Attitude Control System anomaly, A CPU reset occurred and the satellite went to its Safe Mode. The satellite was recovered and returned to normal ops on 20 January and DDL/FWF resumed on 21 January |
| 1106Z | 22 Jan 2005 (022) | One Moon Intrusion | One moon intrusion into the horizon sensors was noted. |
| 2008Z | 08 February 2005 (039) | Yaw Maneuver | The yaw was increased from 10 deg to 20 deg. |
| 0816Z | 18 February 2005 (049) | ERO Maneuver | A trim maneuver of 5 mm/sec @ 0 deg |
| ---- | 18 February 2005 (049) | RA Reset |
The RA was powered off and on over land to eliminate some minor telemetry errors observed since the prior reset (18 Jan) |
| 2243Z | 03 March 2005 (062) | Yaw Maneuver | The yaw was decreased from 20 deg back to 10 deg. |
| ---- | 13 March 2005 (072) |
One RA Calibration Period Discontinued |
One of the two daily RA CALS was discontinued to collect data over Africa |
| ---- | 24 March 2005 (083) | Data Outage |
As of 1658Z the satellite was in a diagnostic mode with the ground stations obtaining a Fault Frame Dump. Due to a ground system computer outage, the satellite remained in that mode until 2332Z. |
| 0000Z | 06 April 2005 (096) | Yaw Maneuver | The yaw was decreased from 10 deg down to 5 deg. |
| 1800Z | 07 April 2005 (097) | Yaw Maneuver | The yaw was decreased from 5 deg down to 0 deg. |
| 1750Z | 27 April 2005 (117) | Yaw Maneuver | The yaw was decreased from 0 deg down to -5 deg. |
| 0130Z | 27 April 2005 (117) | ERO Maneuver | A trim maneuver of 11 mm/sec @ 0 deg |
| 0630Z | 04 May 2005 (124) | ABCAL Maneuver |
The satellite will be biased off nadir (no propulsion) to re-calibrate the attitude control |
| 0224Z | 09 June 2005 (160) | ERO Maneuver | A trim maneuver of 11 mm/sec @ 0 deg |
| 2330Z | 29 June 2005 (180) | Yaw Maneuver | The yaw was returned to 0 deg from -5 deg. |
| 0221Z | 13 July 2005 (194) | ERO Maneuver |
A trim maneuver of about 2 mm/sec @ 180 deg -- this was a braking maneuver |
| 1940Z | 14 July 2005 (195) | Yaw Maneuver | The yaw was returned to +5 deg from 0 deg. |
| 0221Z | 16 July 2005 (197) | ERO Maneuver |
A trim maneuver of about 10 mm/sec @ 180 deg -- this was a second braking maneuver as the first on the 13 was insufficient |
| 0204Z | 26 July 2005 (207) | ERO Maneuver | A trim maneuver of about 14 mm/sec @ 0 deg |
| 0137Z | 09 Aug 2005 (221) | ERO Maneuver | A trim maneuver of 3 mm/sec @ 0 deg |
| 2240Z | 09 Aug 2005 (221) | Yaw Maneuver | The yaw was returned to 0 deg from +5 deg. |
| ---- | 24 Aug 2005 (236) | Data Outage |
Due to hurricane Katrina, which caused power and communication outages across
the gulf coast, the NAVO ground system is totally out, the satellite remains operational and data is being archived by the Naval Satellite Operations Center |
| 1222Z | 10 Sep 2005 (253) | Payload Outage |
An autonomous payload outage occurred. The payload was recovered at 1950Z |
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0215Z 0356Z |
15 Sep 2005 (258) | Two Moon Intrusions | Two moon intrusions into the horizon sensors were noted. |
| 0207Z | 16 Sep 2005 (259) | ERO Maneuver | A trim maneuver of about 5 mm/sec @ 180 deg |
| 0532Z | 03 Oct 2005 (276) | Payload Outage |
An autonomous payload outage occurred. The payload was recovered at 1555Z |
| --- | 10 Oct 2005 (283) | Reduced Cals | For about a month the number of full cal periods will be occasionally reduced to support battery maintenance |
| 0116Z | 02 Nov 2005 (305) | ERO Maneuver | A trim maneuver of about 15 mm/sec @ 0 deg |
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2001Z 2141Z 2322Z |
19 Nov 2005 (323) | Three Moon Intrusions | Three moon intrusions into the horizon sensors were noted. |
| 1900Z | 09 Dec 2005 (343) | Payload Outage |
An autonomous payload outage occurred.
The payload was recovered about 2250Z. The RA patch was installed at about 0100Z on 10 Dec and the WVR was thermally stabilized at about 1900Z on 10 Dec. |
| 1832Z | 13 Dec 2005 (347) | Yaw Maneuver | The yaw was increased to +5 deg from 0 deg. |
| 0054Z | 15 Dec 2005 (349) | ERO Maneuver | A trim maneuver of about 14 mm/sec @ 0 deg |
| 2240Z | 16 Dec 2005 (350) | Yaw Maneuver | The yaw was decreased to 0 deg from +5 deg. |
| 2247Z | 20 Dec 2005 (354) | Yaw Maneuver | The yaw was increased to +2.5 deg from 0 deg. |
| 2330Z | 05 Jan 2006 (005) | Yaw Maneuver | The yaw was increased to +5 deg from +2.5 deg. |
| 0106Z | 07 Jan 2006 (007) | Yaw Maneuver | The yaw was decreased to +2.5 deg from +5 deg. |
| 2000Z | 13 Jan 2006 (013) | Payload Outage |
An autonomous payload outage occurred.
The payload has been recovered and the RA patch installed. The WVR will remain off temporarily for battery reconditioning |
| 0303Z | 19 Jan 2006 (019) | ERO Maneuver | A trim maneuver of about 15 mm/sec @ 0 deg |
| 0106Z | 19 Jan 2006 (019) | Yaw Maneuver | The yaw was increased to +5.0 deg from +2.5 deg. |
| 0106Z | 20 Jan 2006 (020) | Yaw Maneuver | The yaw was decreased to +2.5 deg from +5 deg. |
| 2122Z | 25 Jan 2006 (025) | WVR restored |
The WVR was turned back on. It reached equilibrium at about 2051Z on 26 Jan |
| 2054Z | 02 Mar 2006 (033) | ABCAL Maneuver |
The satellite will be biased off nadir (no propulsion) to re-calibrate the attitude control |
| 0135Z | 13 Apr 2006 (103) | ERO Maneuver | A trim maneuver of about 12 mm/sec @ 0 deg |
| 0143Z | 13 Jul 2006 (194) | ERO Maneuver | A trim maneuver of about 3 mm/sec @ 0 deg |
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0834Z 1153Z 1460Z |
02 Aug 2006 (214) | Payload Outage | Three payload outages occurred due to low voltage conditions on the satellite during eclipse. The RA and WVR will remain off temporarily during testing. |
| 0100Z | 27 Sep 2006 (270) | ERO Maneuver | A trim maneuver of about 12 mm/sec @ 0 deg |
| 1300Z | 05 Oct 2006 (278) | RA restored | The RA was back on, in Track1 and producing data. However the WVR will remain off until further notice |
| 2237Z | 12 Nov 2006 (316) | ERO Maneuver | A trim maneuver of about 15 mm/sec @ 0 deg |
| 0249Z | 16 Nov 2006 (320) | Inclination Maneuver |
The first of two propulsion maneuvers, this one of about 150 mm/sec @ 90 deg |
| 0303Z | 22 Nov 2006 (326) | Inclination Maneuver |
The second of two propulsion maneuvers, this one of about 1185 mm/sec @ 90 deg |
| 0051Z | 25 Nov 2006 (329) | ERO Maneuver | A trim maneuver of about 65 mm/sec @ 180 deg |
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2248Z 0028Z |
28 Nov 2006 (332) 29 Nov 2006 (333) |
Two ERO Maneuver |
Two additional trim maneuvers of about 23 mm/sec @ 0 deg each |
FOR All 2000 GFO EVENTS CLICK HERE.
FOR All 2001 GFO EVENTS CLICK HERE.
FOR All 2002 GFO EVENTS CLICK HERE.
FOR All 2003 GFO EVENTS CLICK HERE.
FOR All 2004 GFO EVENTS CLICK HERE.
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General Notes 1) The moon intrusion angles during the momentary horizon sensor events are no longer being reported since these are only the horizon sensor outputs as a result of the moon intrusions. With the satellite inertia to be overcome, and given the response time of the attitude control system (the time required to spin up the momentum wheels and turn the satellite), any momentary moon intrusion has likely ended before anything more than a negligible spacecraft motion occurs.
2) Yaw changes for battery and thermal management should not affect the users. All the individual changes may not be reported in this chart.