ACE Weekly 11/23/2010 - 11/29/2010 All ACE spacecraft subsystems are performing nominally. ======================================================================== Orbit/Attitude: Type Attitude Date 11/23/2010 DOY 327 2010 Thrusters 2R 4R+ 4R- Duration 10:21 min Start 15:57:41z Stop 16:08:02z HGAStart -4.55deg HGAStop +7.74deg SunStart 6.91deg SunStop 7.13deg SpinStart 5.0706rpm SpinStop 5.0739rpm Nutation 0.18deg Firing 53 pulses FuelUsed 0.1715lbs FuelRemain 132.5176lbs FinalSCMass 1366.778lbs The next attitude maneuver and station keeping #56 are scheduled for Thursday 12/02/2010. ======================================================================= OCRs: None ======================================================================== Activities: Data Capture: 100% DOY 318-325 2010 Operations continues on the backup ground system. The first pass with DSN's new DCD (Data Capture and Delivery) occurred on Wednesday 11/24/2010 (DOY 328). DSN's Madrid site had transitioned 11/8/2010 through 11/10/2010, but 11/24/2010 was the first ACE pass with Madrid. The ACE Science Center only had a minor issue (filename renaming permissions) which has been resolved. DSN's Goldstone transition will occur over the next 2 weeks. ACE's 12/3/2010 pass will be with the new DCD system and then all ACE passes after 12/7/2010 are expected be with the new DCD system. Work continues to allow files to be transferred from DSN's DCD system to the MMOC. There is a higher than normal risk of data loss from October 2010 through February 2011. If there are problems with the passes, it may not be possible to acquire additional DSN time. ======================================================================== Anomalies: DOY 327 11/23/2010 S-ACE-0559 G10-0075 DSS-27 Errors DSS-27 had problems calibrating their equipment due to "MICRO488 errors" at Beginning Of Track (BOT). DR#G110788 IMPACT: Activities delayed 18 minutes. ACE was still in the RTSW format and NOAA Space Weather was able to receive data via another antenna. DOY 328 11/24/2010 S-WIND-0413 ITOS tm_controller Before Beginning Of Track, ITOS had problems connecting telemetry, "timeout reading from tm_controller". ITOS was stopped and restarted and the WIND pass was taken successfully. IMPACT: Manual intervention required. DOY 331 11/27/2010 S-ACE-0560 G10-0076 DSS-27 Transmitter Problems DSS-27 had problems configuring their transmitter at Beginning Of Track (BOT). DR#G110805 IMPACT: Minimal. Activities delayed 10 minutes. 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