ACE Weekly 03/13/2013 - 03/19/2013 All ACE spacecraft subsystems are performing as expected. ======================================================================== Orbit/Attitude: Type Attitude Date 03/19/2013 DOY 078 2013 Thrusters 2R 4R+ 4R- Duration 8:12 min Start 14:53:44z Stop 15:01:56z HGAStart -8.50deg HGAStop +8.94deg SunStart 18.06deg SunStop 13.80deg SpinStart 5.0869rpm SpinStop 5.0887rpm Nutation 0.16deg Firing 42 pulses FuelUsed 0.1349lbm FuelRemain 115.6544lbm FinalSCMass 1349.914lbm The next attitude maneuver is scheduled for Tuesday 03/26/2013. Station Keeping maneuver #65 is scheduled for Tuesday 04/02/2013. ======================================================================== OCRs: None ======================================================================== Activities: Data Capture: 100% DOY 069-076 2013 No significant impact from the moderate coronal mass ejection this past weekend (3/15-3/19). The ULEIS instrument closed its shutter for 24 hours during the storm. ULEIS has had 6 shutter movements (including these 4) so far in 2013. In 2012, there were 36 ULEIS shutter movements during 10 solar storms. Sun Mar 17 2013, DOY 076 03:27:59z closed to 25% Sun Mar 17 2013, DOY 076 05:31:43z closed to 6% Mon Mar 18 2013, DOY 076 01:28:31z opened to 25% Mon Mar 18 2013, DOY 076 03:34:23z opened to 100% ======================================================================== Anomalies: None ======================================================================== Average Sun Angles With Weekly Attitude Maneuvers Dates Avg Sun Avg SEV Sun-SEV (indicates extra s/c tilt) ----------- ------- ------- ---------------------------------- 10/18-10/23 11.0deg 5.1deg 5.9deg 10/23-10/28 9.3deg 3.3deg 6.0deg 10/28-11/06 7.3deg 2.0deg 5.3deg 11/06-11/13 8.4deg 3.8deg 4.6deg 11/13-11/20 10.3deg 6.3deg 4.0deg 11/20-11/27 12.7deg 8.6deg 4.1deg 11/27-12/04 14.9deg 10.1deg 4.8deg 12/04-12/11 16.0deg 10.9deg 5.1deg 12/11-12/18 16.8deg 11.3deg 5.5deg 12/18-12/27 16.5deg 10.7deg 5.8deg 12/27-01/03 16.0deg 9.1deg 6.9deg 01/03-01/08 15.2deg 7.2deg 8.0deg 01/08-01/15 13.8deg 6.0deg 7.8deg 01/15-01/22 12.3deg 4.0deg 8.3deg 01/22-01/29 10.6deg 2.4deg 8.2deg 01/29-02/05 9.1deg 3.2deg 5.9deg 02/05-02/12 8.4deg 5.1deg 3.3deg 02/12-02/19 12.2deg 7.0deg 5.0deg 02/19-02/26 14.3deg 8.8deg 5.5deg 02/26-03/05 15.6deg 10.4deg 5.2deg 03/05-03/12 16.1deg 11.0deg 5.1deg 03/12-03/19 16.1deg 11.0deg 5.1deg