STEREO Weekly Meeting Minutes for 2022-10-18 (Week 42) 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 41 (Oct 10-16) * On day 283 (Oct 10), during the DSS-53 support for Ahead, the beginning of track was delayed 9 minutes until 1834z, due to the station automation system not being started correctly. This anomaly resulted in the loss of 9 minutes of real-time telemetry and SSR data. The MOPs team repositioned the SSR pointers during the support and recovered all the affected data. See DR #G123089 for more information. * On day 285 (Oct 12), during the DSS-55 support for Ahead, and day 287 (Oct 14), during the DSS-53 support, PLASTIC increased their MCP voltage levels. The team is monitoring the effect of this, and may increase the voltage again. * As of day 289 (Oct 16), all PLASTIC systems are behaving well, except there is a moderate 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 42 (Oct 17-23) * Ahead has ten tracks during the week, all at 720 kbps, and overall coverage is nominal. * The S/WAVES instrument will be power cycled on Thursday, Oct 20, in an attempt to resolve an issue with a stuck A/D converter in one of the TDS channels. The instrument will be turned off at 14:30 UT, and back on again at 15:00 UT to allow any parasitic currents to dissipate. Time tagged commands at 16:00 UT will bring the instrument back into operation. The S/WAVES team pointed out that the S/WAVES power was cycled many times during solar conjunction in 2015. Week 43 (Oct 24-30) * Ahead has eleven tracks during the week, all at 720 kbps, and overall coverage is nominal. * A track on Monday, Oct 24, was changed due to DSN maintenance. Hence, the IMU2 EEPROM refresh on Ahead has been rescheduled for Wednesday, Oct 26, starting around 18:15 UT. The IMU will be turned on, and a short sample of data will be collected, but the spacecraft will not be using the IMU for attitude determination. The whole procedure is expected to take about 30 minutes. * Tuesday, Oct 25 (or Oct 26 UTC), is the 16th launch anniversary of STEREO. Week 44 (Oct 31-Nov 6) * Ahead has nine tracks during the week, all at 720 kbps, and overall coverage is nominal. * Saturday, Nov 6, is the end of the Solar Orbiter perihelion pass. * Daylight Savings Time in the US ends on Sunday, Nov 6. Week 45 (Nov 7-13) * Ahead has ten tracks during the week, all at 720 kbps, and overall coverage is nominal. * The 151st momentum dump is scheduled for Monday, Nov 7, at 19:00 UT. * Friday, Nov 11, is Veterans Day, which is an APL holiday. Week 46 (Nov 14-20) * Ahead has eight tracks during the week, all at 720 kbps, and overall coverage is nominal. * The 64th SECCHI stepped calibration roll is scheduled for Friday, Nov 18, starting at 11:15 UT. This will be the midpoint roll. Week 47 (Nov 21-27) * Ahead has nine tracks during the week, all at 720 kbps, and overall coverage is nominal. * Thursday, Nov 24, is Thanksgiving. APL will be closed both Thursday and Friday, Nov 24-25. COORDINATED OBSERVATIONS ------------------------------------------------------------------------------- Scheduled activities for Week 41: M Oct 10 (283) T Oct 11 (284) W Oct 12 (285) T Oct 13 (286) F Oct 14 (287) S Oct 15 (288) S Oct 16 (289) Notes: * Planned power outage at APL, Oct 15, 10-22 UT. MOC will continue on generator power. * Solar Orbiter Remote Sensing Window 4, Oct 8-17 ------------------------------------------------------------------------------- Scheduled activities for Week 42: M Oct 17 (290) End of Solar Orbiter Remote Sensing Window 4 T Oct 18 (291) Start of Solar Orbiter Remote Sensing Window 5 W Oct 19 (292) T Oct 20 (293) F Oct 21 (294) S Oct 22 (295) S Oct 23 (296) Notes: * Solar Orbiter Remote Sensing Window 4, Oct 8-17 * Solar Orbiter Remote Sensing Window 5, Oct 18-27 ------------------------------------------------------------------------------- Scheduled activities for Week 43: M Oct 24 (297) T Oct 25 (298) 16th STEREO launch anniversary W Oct 26 (299) Ahead: IMU2 EEPROM refresh, 18:15 UT T Oct 27 (300) End of Solar Orbiter Remote Sensing Window 5 F Oct 28 (301) Start of Solar Orbiter Remote Sensing Window 6 S Oct 29 (302) S Oct 30 (303) Notes: * Solar Orbiter Remote Sensing Window 5, Oct 18-27 * Solar Orbiter Remote Sensing Window 6, Oct 28-Nov 6 ------------------------------------------------------------------------------- Scheduled activities for Week 44: M Oct 31 (304) T Nov 01 (305) W Nov 02 (306) T Nov 03 (307) F Nov 04 (308) S Nov 05 (309) S Nov 06 (310) Daylight Savings Time in US ends End of Solar Orbiter Remote Sensing Window 6 Notes: * Solar Orbiter Remote Sensing Window 6, Oct 28-Nov 6 ------------------------------------------------------------------------------- Scheduled activities for Week 45: M Nov 07 (311) Ahead: Momentum dump, 19:00 UT T Nov 08 (312) W Nov 09 (313) T Nov 10 (314) F Nov 11 (315) Veteran's Day S Nov 12 (316) S Nov 13 (317) ------------------------------------------------------------------------------- Scheduled activities for Week 46: M Nov 14 (318) T Nov 15 (319) W Nov 16 (320) T Nov 17 (321) F Nov 18 (322) Ahead: SECCHI stepped calibration roll, 11:18 UT S Nov 19 (323) S Nov 20 (324) ------------------------------------------------------------------------------- Scheduled activities for Week 47: M Nov 21 (325) T Nov 22 (326) W Nov 23 (327) T Nov 24 (328) Thanksgiving F Nov 25 (329) S Nov 26 (330) S Nov 27 (331) ------------------------------------------------------------------------------- Upcoming events: Behind events are contingent on recovering the spacecraft. 2022: * Dec 7-16 Parker Solar Probe perihelion pass * Dec 10-11 EUVI 171A Deep Field * Dec 10-12 COR2 deep field (WISPR-HI cross-cal) * Dec 11-12 COR2 pB campaing 2023: * Jan 3 Solar Orbiter Mercury transit * Mar 13-23 Parker Solar Probe perihelion pass * Apr 16 Solar Orbiter Venus occultation * May 5 Behind: Mercury transit * Jun 17-27 Parker Solar Probe perihelion pass * Jun 27 Solar Orbiter Mercury transit * 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: * Feb 18 Solar Orbiter Venus flyby * Mar 19-27 Parker Solar Probe perihelion pass * Apr 7 Ahead: Mercury transit * Jun 15-24 Parker Solar Probe perihelion pass 2026: * Dec 24 Solar Orbiter Venus flyby 2027: * Feb 1 Behind: Mercury transit 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