13 December 2017 - Mission Day: 8048 - DOY: 347
OPERATIONS
 
Science Operations
 
 

DOY = day-of-the-year; FD = Flight date. Times are in UTC.

    Month Day Year DOY FD Time Event
    JAN 18 2003 018 2605 09:16 MDI 3-Month Dynamics--Best Effort Continuous Contact Month until 04:20 UT, February 16
    FEB 25 2003 056 2643 15:00 Station Keeping #36: jets 2,3,4,5; delta V: 0.64m/s; Momentum Management: 3 segm.; speeds: -407/410/1219 rpm; done 18:25 UT
    FEB 27 2003 058 2645 00:50 MDI 5-Day Continuous Contact until 04:24 UT, March 04
    MAR 26 2003 085 2672 11:05 MDI 5-Day Continuous Contact until 17:27 UT, April 01
    APR 23 2003 113 2700 20:03 MDI Continuous Contact until 01:18 UT, April 27--Original plan was to start CC on April 28
    MAY 05 2003 125 2712 00:00 Comms Backup triggered by HGA monitoring on antenna Z-axis, Anomaly S3-0017
    MAY 14 2003 134 2721 11:10 GOLF switch-off by itself; turned back ON May 19, 2003
    MAY 19 2003 139 2726 00:00 MEDOC #11, through June 1
    MAY 25 2003 145 2732 08:00 Stop HGA movements after 2003/05/25 08:00 (investigation of HGA anomaly; OCD 1779)
    JUN 04 2003 155 2742 16:25 HGA pattern/pointing test
    JUN 11 2003 162 2749 15:10 Station Keeping #37: jets 2, 3, 4, 5; dV: 0.41m/s; Mommentum Management: 3 segm.; speeds: -555/402/1417 rpm; done 17:51
    JUN 18 2003 169 2756 15:30 HGA pattern/pointing test
    JUN 19 2003 170 2757 15:43 MDI 5-Day Continuous Contact (ended on June 23 at 14:15 UT)
    JUN 19 2003 170 2757 18:05 HGA moves ok with APME-A and APME-B motor currents used in parallel
    JUN 25 2003 176 2763 18:35 SSR Memory Unit 15 switched back ON
    JUN 27 2003 179 2765 - Beginning of June keyhole period
    JUL 01 2003 182 2769 10:00 HR downlink on 34 m station lost as expected (HGA off-point from LOS to earth: 12.75 M-0)
    JUL 08 2003 189 2776 00:15 ESR-19 caused by FSPAAD
    JUL 08 2003 189 2776 13:24 Roll 180 M-0 to prepare for next HGA "sweet spot," speeds: -2704/722/432
    JUL 08 2003 189 2776 17:40 Station Keeping #38: jets 1,2,4,6; dV: -0.12 m/s; Momentum Management: 2 segm.; speeds: 1154/-722/-1982 rpm
    JUL 14 2003 195 2782 12:30 End of June keyhole period
    JUL 14 2003 195 2782 15:47 Warm start-up due to too tightly spaced mode 3 commands (for APME dual coil commands)
    JUL 23 2003 204 2791 15:42 MDI 5-Day Continuous Contact until July 28, 10:40
    AUG 07 2003 219 2806 14:25 APME Z axis dual coil command to confirm the exact off-pointing. Off-pointing confirmed. Result is -17.9 degrees
    AUG 27 2003 239 2826 12:03 MDI 5-Day Continuous Contact until September 1, 06:47 UT.
    SEP 02 2003 245 2832 18:10 Test in Low Rate by 26 meter station
    SEP 09 2003 252 2839 17:03 60-Day Quasi-MDI Continuous Contact with SOHO Keyhole until September 23 at 22:02 UT
    SEP 22 2003 265 2852 - All passes HR downlinks on 34 meter stations (loss of HR downlinks on 26 meter stations expected on Sept. 23)
    SEP 23 2003 266 2853 - Beginning of September keyhole period
    SEP 28 2003 271 2858 - All passes downlink on 70 meter stations (loss of HR downlinks on 34 meter stations expected on Sept. 28)
    OCT 07 2003 280 2867 08:45 Station Keeping #39: jets 2,3,4; dV: 0.14m/s
    OCT 07 2003 280 2867 09:15 Momentum Management: 3 segments; final speeds: -1330/-308/1860 rpm
    OCT 07 2003 280 2867 11:10 180 M-0 Roll to prepare for next HGA "sweet spot." Final speeds: 1561/312/-1630 rpm
    OCT 18 2003 292 2879 01:16 60-Day Quasi-MDI Continuous Contact with SOHO Keyhole until November 24 at 02:07 UT
    OCT 19 2003 292 2879 19:46 End of September Keyhole period
    OCT 20 2003 293 2880 - Increase ground limits for QTR26: FPSS temp going up due to aging
    OCT 28 2003 301 2888 - Guide star swap and one star declared ineligible due to proton storm
    NOV 03 2003 307 2894 20:08 Beginning of Z axis movements for a ten-day period as per OCD #1860
    NOV 17 2003 321 2908 00:00 MEDOC Campaign #12, until November 30
    NOV 17 2003 321 2908 06:05 End of Z axis improvement (OCD #1860)
    NOV 17 2003 321 2908 19:30 OCD #1865 single coil Z axis movement try (post OCD #1860): failed
    DEC 01 2003 335 2922 20:00 Beginning of Z axis movements for a ten-day period as per OCD #1873
    DEC 11 2003 345 2932 19:00 OCD #1875 single coil Z axis movement try (post OCD #1873): failed
    DEC 18 2003 352 2939 13:00 OCD #1877 test to operate SSR and TR simultaneously
    DEC 23 2003 357 2944 - Beginning of December keyhole period
    DEC 30 2003 364 2951 17:00 Station Keeping #40: jets 2,3,4; dV: 0.007349 m/s
    DEC 30 2003 364 2951 17:45 Momentum Management 3 segments. Final speeds 1200/400/-800 rpm
    DEC 30 2003 364 2951 19:00 180 M-0 Roll to prepare for next HGA "sweet spot." Final speeds: -400/-400/1600 rpm

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