ACE Weekly 01/21/05 - 01/27/05 All ACE spacecraft subsystems are performing nominally. ============================================================================ Orbit/Attitude: Maneuvers completed Type Attitude Date 01/24/05 DOY 024 2005 Thrusters 2R 4R+ 4R- Duration 10:51 minutes Start Time 13:59:05z Stop Time 14:09:56z Firing 55 pulses The next attitude maneuver is scheduled for Thursday 02/03/05. ============================================================================ OCRs: DOY 025 (01/25/05) 16:01:17 - 16:02:09 CRIS-011 The Image Intensifier was powered on after being automatically safeguarded at the beginning of last week's solar activity (at approximately 017-13:51:27). DOY 027 (01/27/05) 15:32:38 - 18:06:32 SWPX-037 The CEM voltage level was toggled between Level 0 (current configuration) and Level 2 every 192 seconds for 24 cycles. The measurements will characterize the non-linear Gain for determining the optimal CEM voltage and to define compensation parameters for data processing. ============================================================================ Ongoing Activities: None ============================================================================ Extra Activities: DOY 021 (01/21/05 SSR A Telemetry Sections downlinked. No new Single Bit Errors (correctable) found. No non-correctable errors (Hard Single Bit Errors & Double Bit Errors) have occurred throughout the mission. ============================================================================ Anomalies: DOY 021 (01/21/05) ACE Anomaly S05-0005 SIS_T12ADETBRD Temperature Violation SIS_T12ADETBRD temperature violated it's yellow high limit of 37C. The temperature had been between 35.7 and 36.3C but jumped an additional 1.5C as a result of the recent solar activity. The temperature was in violation from 021-16:54:45 to 021-17:11:49. Branislav Kecman notified. IMPACT: Awaiting instructions from Branislav Kecman if necessary. DOY 021 (01/21/05) ACE Anomaly S05-0006 SWICS Voltages Limit Violations The following SWICS voltages had intermittent limit violations from 021-17:07:44 through 022-02:08:08. Jim Raines notified. SSCGR20V 3x Yellow Lo 16V < x < 17V SSCPAP5V 5x Yellow Lo 4.00V < x < 4.25V SSCPAM5V 41x Red Hi -4.5V < x IMPACT: Awaiting instructions from Jim Raines if necessary.