STEREO Weekly Meeting Minutes for 2021-01-05 (Week 1) ANNOUNCEMENTS ------------- * None. INSTRUMENT and SPACECRAFT STATUS -------------------------------- * Ahead is operating nominally. PLASTIC is in operational mode, but with a high 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 53 (Dec 28-Jan 3) * On day 365 (Dec 30), the DSS-55 support for Ahead was deleted to accommodate the JUNO mission with downlinking important near-Jupiter data. DSS-54 was RED and down for maintenance, therefore, JUNO would loss the science data without moving the track over to DSS-55. The SSR was emptied as previously planned, thus, the schedule change had no impact. * On day 366 (Dec 31), the MOPs team discovered a problem with the MOC poc_q_mgmt software in the RIONet while checking the SWAVES command POC queue. The commands dated for the year 2021, were moved to the expired directory. The software was coded with a default timeout date of 2020-365-23:59:59 for commands that do not have a timeout value in the command header. Therefore, the software moved the 2021 commands, without timeout dates included, to the expired directory. The MOC ground software engineer located the date in the code and corrected the problem. The SWAVES commands were entered into the POC queue again and the software worked correctly. This is essentially the same problem encountered in the previous week, except this tim in the RIONet. * On day 001 (Jan 1), during the DSS-35 support for Ahead, initial acquisition of telemetry was 7.5 minutes late at 0907z, due to an automation software problem. This anomaly resulted in the loss of 5.5 minutes of SSR data. See DR #C115385 for more information. * On day 002 (Jan 2), during the DSS-34 support for Ahead, turbo decoder lock was lost briefly at 0552z and again at 0653z. This anomaly resulted in the loss of six frames of SSR data. * As of day 003 (Jan 3), all PLASTIC systems are behaving well, except there is a high background count rate, which the team is continuing to monitor. * The average daily science data return for Ahead was 6.5 Gbits during this week. Week 01 (Jan 4-10) * Ahead has ten tracks during the week, and overall coverage is nominal. There are five tracks at 720 kbps, four at 480 kbps, and one at 360 kbps. An ESA Cebreros pass is scheduled for Thursday, Jan 7, and an ESA New Norcia track is scheduled for Saturday, Jan 9. Week 02 (Jan 11-17) * Ahead has ten tracks during the week, and overall coverage is nominal. There are nine passes at 720 kbps, and one at 480 kbps. * The 134th momentum dump on Ahead is scheduled for Monday, Jan 11, with ignitition at 19:00 UT. * The seventh Parker Solar Probe perihelion pass campaign is scheduled for Jan 13-23. Week 03 (Jan 18-24) * Ahead has nine passes during the week, and overall coverage is nominal. There are five passes at 720 kbps, and four at 480 kbps. * Monday, Jan 18, is Martin Luther King Day, which is an APL holiday. * An ESA Cebreros pass is scheduled for Tuesday, Jan 19. * A return-to-service pass for station 43 is scheduled for Saturday, Jan 23. There will be no instrument commanding or SSR playback during this pass. * The Parker Solar Probe perihelion pass period ends on Saturday, Jan 23. Week 04 (Jan 26-31) * Ahead has ten passes during the week, and overall coverage is nominal. There are seven passes at 720 kbps, and three at 480 kbps. An ESA New Norcia pass is scheduled for Thursday, Jan 28. Week 05 (Feb 1-7) * Ahead has nine passes during the week, and overall coverage is nominal. There are seven passes at 720 kbps, and two at 480 kbps. * Solar Orbiter will be running a Remote Sensor Synoptics campaign Feb 1-19. Week 06 (Feb 8-14) * Ahead has ten passes during the week, and overall coverage is nominal. There are eight passes at 720 kbps, and two at 480 kbps. ESA Cebreros passes are scheduled for Monday, Feb 8, and Tuesday, Feb 9. COORDINATED OBSERVATIONS ------------------------------------------------------------------------------- Scheduled activities for Week 01: M Jan 04 (004) T Jan 05 (005) W Jan 06 (006) T Jan 07 (007) F Jan 08 (008) S Jan 09 (009) S Jan 10 (010) ------------------------------------------------------------------------------- Scheduled activities for Week 02: M Jan 11 (011) Ahead: Momentum dump, 19:00 UT T Jan 12 (012) W Jan 13 (013) Start of Parker Solar Probe perihelion pass T Jan 14 (014) F Jan 15 (015) Ahead: EUVI 171A Deep Field, COR2 deep field S Jan 16 (016) Ahead: EUVI 171A Deep Field, COR2 deep field S Jan 17 (017) Ahead: EUVI 171A Deep Field, COR2 pB series only Notes: * Parker Solar Probe perihelion pass, Jan 13-23. ------------------------------------------------------------------------------- Scheduled activities for Week 03: M Jan 18 (018) Martin Luther King Day Ahead: EUVI 171A Deep Field, COR2 pB series only T Jan 19 (019) W Jan 20 (020) T Jan 21 (021) F Jan 22 (022) S Jan 23 (023) Ahead: Return-to-service pass with station 43 End of Parker Solar Probe perihelion pass S Jan 24 (024) Notes: * Parker Solar Probe perihelion pass, Jan 13-23. ------------------------------------------------------------------------------- Scheduled activities for Week 04: M Jan 25 (025) T Jan 26 (026) W Jan 27 (027) T Jan 28 (028) F Jan 29 (029) S Jan 30 (030) S Jan 31 (031) ------------------------------------------------------------------------------- Scheduled activities for Week 05: M Feb 01 (032) Start of Solar Orbiter Remote Sensor Synoptics T Feb 02 (033) W Feb 03 (034) T Feb 04 (035) F Feb 05 (036) S Feb 06 (037) S Feb 07 (038) Notes: * Solar Orbiter Remote Sensor Synoptics, Feb 1-19 ------------------------------------------------------------------------------- Scheduled activities for Week 06: M Feb 08 (039) T Feb 09 (040) W Feb 10 (041) T Feb 11 (042) F Feb 12 (043) S Feb 13 (044) S Feb 14 (045) Notes: * Solar Orbiter Remote Sensor Synoptics, Feb 1-19 ------------------------------------------------------------------------------- Upcoming events: Behind events are contingent on recovering the spacecraft. 2021: * Feb 1-19 Solar Orbiter Remote Sensor Synoptics * Feb 15 Ahead: Momentum dump * Feb 20 Parker Solar Probe Venus flyby * Feb 20-25 Solar Orbiter Remote Sensor Checkout Window 2 * Mar 21-24 Solar Orbiter Remote Sensor Checkout Window 3 * Apr 21-28 Solar Orbiter Remote Sensor Synoptics * Apr 25-May 4 Parker Solar Probe perihelion pass * May 13-Jul 15 Betelgeuse visible in SECCHI HI2 with 180 degree roll * Aug 5-15 Parker Solar Probe perihelion pass * Oct 16 Parker Solar Probe Venus flyby * Nov 17-26 Parker Solar Probe perihelion pass 2022: * Feb 21-Mar 2 Parker Solar Probe perihelion pass * May 28-Jun 7 Parker Solar Probe perihelion pass * Sep 2-11 Parker Solar Probe perihelion pass * Dec 7-16 Parker Solar Probe perihelion pass 2023: * Mar 13-23 Parker Solar Probe perihelion pass * May 5 Behind: Mercury transit * Jun 17-27 Parker Solar Probe perihelion pass * Jul 17 Behind: Closest approach to Earth * Aug 13 Ahead: Closest approach to Earth * Aug 21 Parker Solar Probe Venus flyby * Sep 23-Oct 3 Parker Solar Probe perihelion pass * Dec 25-Jan 3 Parker Solar Probe perihelion pass 2024: * Mar 26-Apr 4 Parker Solar Probe perihelion pass * Jun 26-Jul 5 Parker Solar Probe perihelion pass * Sep 26-Oct 5 Parker Solar Probe perihelion pass * Nov 6 Parker Solar Probe Venus flyby, in HI2-A field-of-view * Dec 20-29 Parker Solar Probe perihelion pass 2025: * Mar 19-27 Parker Solar Probe perihelion pass * Apr 7 Ahead: Mercury transit * Jun 15-24 Parker Solar Probe perihelion pass 2026: 2027: * Feb 1 Behind: Mercury transit 2028: 2029: * Jun 30 Ahead: Mercury transit