18 December 2017 - Mission Day: 8053 - DOY: 352
OPERATIONS
 
Science Operations
 
 

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

    Month Day Year DOY FD Time Event
    JAN 14 2001 14 1871 21:02 ESR-16, caused by ACU reset
    JAN 15 2001 15 1872 17:33 recovery to CRP; Momentum Management: 1 burn 23:25
    JAN 16 2001 16 1873 0:30 Roll back from -55 to -5.6 deg., completed 02:20
    JAN 16 2001 16 1873 16:45 Momentum Management. burn 1 with jet 4; wheels go from 277/-960/1124 to 587/-910/762
    JAN 16 2001 16 1873 17:05 Momentum Management burn 2 with jet 5; wheels go to 854/-921/1029
    JAN 16 2001 16 1873 17:50 Station Keeping #27: thrusters 1,2,4, and 6; delta V: 0.154 m/s, fuel:0.168 kg
    JAN 16 2001 16 1873 18:50 Momentum Management burn 1 with jet 3; wheels go from 865/-919/1038 to 390/1049/1644
    JAN 16 2001 16 1873 19:15 Momentum Management burn 2 with jet 2; wheels go to 309/351/991; Hx: 5.04 NMS
    JAN 16 2001 16 1873 20:35 Roll Profile to trim the final roll attitude (- 5.5 degrees); back in Normal Mode @ 20:49
    FEB 8 2001 39 1896 18:26 Offpointing for EIT (arcsec): Yaw: -225,-100,0,68,383,0; Pitch: -225,-100,0,68,383,30,0; done 21:00
    FEB 22 2001 53 1910 17:30 Momentum Management; jets 1 and 3; final speeds: -977; 501; 1023 rpm; SK -28: delta V: 2mm/s; fuel 1.8 grams
    FEB 28 2001 59 1916 09:15 MDI Continuous Coverage until May 31 at 01:50 UT
    APR 2 2001 92 1949 21:51 Proton event - X20 flare with elevated proton counts for 6 days, followed by a series of events catalogued at the following web site: http://sohowww.nascom.nasa.gov/hotshots/pastshots.html#
    APR 15 2001 105 1962 19:27 Proton event - X14 flare
    APR 18 2001 108 1965 03:00 Proton event from backside flare
    MAY 14 2001 134 1991 00:00 MEDOC Campaign #7, until May 28
    JUN 28 2001 179 2036 14:10 Station Keeping #29: thrusters 2,3,4; delta V: 0.659 m/s, fuel: 0.55 kg; 76 minutes
    JUN 28 2001 179 2036 15:55 Momentum Management; 3 segments: jets 5,4,1; final speeds: -335/327/1092 rpm
    JUL 28 2001 209 2066 20:16 ESR-17, caused by ACU reset; recovery to CRP 3:20
    JUL 29 2001 210 2067 17:06 Roll back (by 158 degrees) from 162 degrees to 4 degrees, completed 22:46
    JUL 30 2001 211 2068 00:14 Momentum Management; 3 segments: jets 3,1,5; final speeds: -522/585/1024 rpm
    JUL 31 2001 212 2069 15:30 Station Keeping #30: thrusters 1,2,4, and 6; delta V: 0.185 m/s, fuel: 0.202kg
    AUG 8 2001 220 2077 19:48 ACU Patch 15 uplinked (fixing RAM corruption by selfcheck); name: CSEA015
    AUG 16 2001 228 2085 - Halo CME and proton storm (CME began on August 15 at about 23:48 UT). Proton count receded soon enough so instruments didn't have to safe
    AUG 29 2001 241 2098 08:55 MDI Continuous until Sept. 4 at 08:32 UT
    SEP 24 2001 267 2124 09:36 CME; X-ray flare (X2.6), peak at 10:38 UT; energetic particle event at 12:00 UT, lasting until 269/12:00
    OCT 15 2001 288 2145 - MEDOC Campaign #8, until October 26
    OCT 24 2001 297 2154 23:30 MDI continuous until Oct. 30 at 19:25
    NOV 03 2001 307 2164 20:09 Start of X-panel heater switch-down in 10% steps; completed Nov. 19 at 18:51
    NOV 04 2001 308 2165 18:06 Proton event, X1 flare at 16:03; CTOF powered off after limit violation until Nov 19 @ 19:17
    NOV 07 2001 311 2168 07:20 SK-31: jets 1,2,4,5; delta V: 0.02 m/s, fuel: 0.02 kg; Mom. Mgmt: 3 segm.; speeds: -487/215/2477
    NOV 14 2001 318 2175 12:00 Science roll: from 6.5 degrees to 330 degrees in 30 degree steps; back to 270 degrees - overnight stay; back to 6.5 degrees next day
    NOV 20 2001 324 2181 - Tank heating thresholds changed from 18-23 degrees to 20-21 degrees
    NOV 23 2001 327 2184 06:00 Proton event; M9.9 flare at 22:32 on Nov. 22, lasting until Nov. 24 @ 13:00; CDS safed Nov. 24
    DEC 26 2001 360 2217 05:00 Proton event; went on until 15:00 UT

Back to SOHO Events page

 
 

• European Site • US Site

 

Feedback & Comments: SOHO Webmaster

Last modification:

SOHO
and
SOHO
SOHO is a project of international cooperation between