STEREO Weekly Meeting Minutes for 2026-03-10 (Week 11) ANNOUNCEMENTS ------------- * None INSTRUMENT and SPACECRAFT STATUS -------------------------------- * Ahead is operating nominally. PLASTIC is in operational mode, but with a moderately higher than normal background rate. * Four years after the initial loss of communications anomaly with the Behind observatory, NASA has directed to cease periodic recovery operations with the last support on October 17, 2018. DISCUSSION AND OPERATIONS CONSTRAINTS ------------------------------------- Week 10 (Mar 2-8) * On day 062 (Mar 3), during the DSS-65 support, turbo decoder lock was lost intermittently between 04:55 and 05:08 UT, due to weather and low elevation. This anomaly resulted in the loss of 3779 frames of SSR data. The MOPs team repositioned the SSR pointers during the support and recovered all the affected data. See DR# M118915 for more information. * On day 062 (Mar 3), APL network engineers successfully performed the MOC annual IONET IT security scans from 13:00 to 15:00 UT. After the scans, the MOPs team verified the SLE telemetry and command connectivity with DSN. * On day 063 (Mar 4), during the DSS-24 support, turbo decoder lock was lost briefly at 14:54 UT. This anomaly resulted in the loss of two frames of SSR data. The MOPs team repositioned the SSR pointers during the support and recovered all the affected data. * On day 064 (Mar 5), during the DSS-56 support, turbo decoder lock was lost briefly at 07:36 UT. This anomaly resulted in the loss of six frames of SSR data. The MOPs team repositioned the SSR pointers during the support and recovered all the affected data. * On day 065 (Mar 6), during the DSS-65 support, turbo decoder lock was lost intermittently between 05:06 and 05:12 UT. This anomaly resulted in the loss of 13 frames of SSR data. The MOPs team repositioned the SSR pointers during the support and recovered all the affected data. * On day 067 (Mar 8), during the DSS-54 support, turbo decoder lock was lost briefly at 07:00 UT. This anomaly resulted in the loss of three frames of SSR data. The MOPs team repositioned the SSR pointers during the support and recovered all the affected data. * The average daily science data return for Ahead was 7.2 Gbits during this week. Week 11 (Mar 9-15) * Ahead has fourteen passes during the week, eleven at 720 kbps, and three at 480 kbps. Overall coverage is nominal. * There will be an ESA New Norcia pass on Tuesday, March 10, from 18:20-21:25 UT. * There will be an ESA Malargue pass on Wednesday, March 11, from 12:30-13:45 UT. * There will be an ESA New Norcia pass on Saturday, March 14, from 18:45-21:45 UT. * See note below under "Other" regarding SDAC and SPDF moves during week 11. Week 12 (Mar 16-22) * Ahead has eleven passes during the week, all at 720 kbps, and overall coverage is nominal. * There is a DSN network maintenance event scheduled for Tuesday, March 17th, from 21:00-05:00 March 18th. Week 13 (Mar 23-29) * Ahead has fourteen passes during the week, all at 480 kbps and overall coverage is nominal. * There will be an ESA New Norcia pass on Monday, March 23rd, from 18:45-20:45 UT. * The 184th momentum dump is scheduled for Tuesday, March 24th, at 14:00 UT. * An ESA Malargue track is scheduled for Wednesday, March 25th, from 07:45 to 08:50 UT. * The 27th Solar Orbiter remote sensing window begins Sunday, March 29th. Week 14 (Mar 30 - Apr 5) * Ahead has thirteen passes during the week, four at 720 kbps, and nine at 480 kbps. Overall coverage is nominal. * The Artemis II launch opportunity window opens on Wednesday, April 1st, and closes Friday, April 11th. * There will be a MOC firewall upgrade on Wednesday, April 1st, from 11:00-15:00 UT. Week 15 (Apr 6-12) * Ahead has thirteen passes during the week, all at 480 kbps, and overall coverage is nominal. * An ESA Cebreros track is scheduled for Wednesday, April 8th, from 04:30 to 05:25. * An ESA Malargue track is scheduled for Wednesday, April 8th, from 07:05 to 09:10. * An ESA Malargue track is scheduled for Thursday, April 9th, from 14:45 to 18:45. Week 16 (Apr 13-19) * Ahead has eleven passes during the week, four at 720 kbps and seven at 480 kbps, and overall coverage is nominal. * There is DSN mission network maintenance scheduled for Wednesday, April 15th. Other * The SPDF and SDAC have been moved to their new building. The SSC website is up running, but some features or functions may still be missing. * The Senior Review call for proposals is out. STEREO is requested to provide an oral proposal. Slides are due May 8th, and the presentation will be given in late May or possibly early June. Terry may request a slide from each instrument team describing the instrument's purpose and current status. COORDINATED OBSERVATIONS ------------------------------------------------------------------------------- Scheduled activities for Week 11: M Mar 09 (068) T Mar 10 (069) Solar Orbiter Remote Sensing Window 26 ends W Mar 11 (070) Artemis II launch window ends T Mar 12 (071) F Mar 13 (072) S Mar 14 (073) S Mar 15 (074) Notes: * Solar Orbiter Remote Sensing Window 26, Feb 28 - Mar 10 * Artemis II launch window, Mar 6-11 * Parker Solar Probe Perihelion pass, Mar 8-16 - HI1 20min + COR2 15-min pB, Mar 3-12 (tentative, as downlink permits) - COR2 Deep Field (36-sec, 5-min), Mar 13-15 (as downlink permits) ------------------------------------------------------------------------------- Scheduled activities for Week 12: M Mar 16 (075) T Mar 17 (076) W Mar 18 (077) T Mar 19 (078) F Mar 20 (079) S Mar 21 (080) S Mar 22 (081) Notes: * Parker Solar Probe Perihelion pass, Mar 8-16 ------------------------------------------------------------------------------- Scheduled activities for Week 13: M Mar 23 (082) T Mar 24 (083) Ahead: Momentum dump, 14:00 UT W Mar 25 (084) T Mar 26 (085) F Mar 27 (086) S Mar 28 (087) S Mar 29 (088) Solar Orbiter Remote Sensing Window 27 begins Notes: * Solar Orbiter Remote Sensing Window 27, Mar 29-Apr 3 ------------------------------------------------------------------------------- Scheduled activities for Week 14: M Mar 30 (089) T Mar 31 (090) W Apr 01 (091) Artemis II launch window begins T Apr 02 (092) F Apr 03 (093) S Apr 04 (094) S Apr 05 (095) Notes: * Solar Orbiter Remote Sensing Window 27, Mar 29-Apr 3 * Artemis II launch window, Apr 1-10 ------------------------------------------------------------------------------- Scheduled activities for Week 15: M Apr 06 (096) T Apr 07 (097) W Apr 08 (098) T Apr 09 (099) F Apr 10 (100) Artemis II launch window ends S Apr 11 (101) S Apr 12 (102) Notes: * Artemis II launch window, Apr 1-10 ------------------------------------------------------------------------------- Scheduled activities for Week 16: M Apr 13 (103) T Apr 14 (104) W Apr 15 (105) T Apr 16 (106) F Apr 17 (107) S Apr 18 (108) S Apr 19 (109) ------------------------------------------------------------------------------- Upcoming events: 2026: * Jun 4-12 Parker Solar Probe perihelion pass * Aug 4-14 Solar Orbiter Remote Sensing Window 28 * Aug 15-25 Solar Orbiter Remote Sensing Window 29 * Sep 1-9 Parker Solar Probe perihelion pass * Sep 11-21 Solar Orbiter Remote Sensing Window 30 * Nov 28-Dec 6 Parker Solar Probe perihelion pass * Dec 24 Solar Orbiter Venus flyby 2028: * Mar 18 Solar Orbiter Venus flyby 2029: * Jun 10 Solar Orbiter Venus flyby * Jun 30 Ahead: Mercury transit 2030: * Sep 3 Solar Orbiter Venus flyby ######################################################################## Access the STEREO-SCI-OPS Home Page and Archives: http://listserv.jhuapl.edu/scripts/wa.exe?A0=STEREO-SCI-OPS Unsubscribe from the STEREO-SCI-OPS List: http://listserv.jhuapl.edu/scripts/wa.exe?TICKET=NzM5NjAzIHNoYWVsYS5pLmpvbmVzbWVjaG9sc2t5QE5BU0EuR09WIFNURVJFTy1TQ0ktT1BTIGvQ3MCEIhMC&c=SIGNOFF ########################################################################