STEREO Weekly Meeting Minutes for 2024-11-126 (Week 48) 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 47 (Nov 18-24) * On day 325 (Nov 20), DSN conducted a Mission Network Maintenance from 1025z through 1425z. After the maintenance, the MOPs team verified the SLE telemetry and command connectivity with DSN. * On day 326 (Nov 21), during the DSS-63 support, turbo decoder lock was lost briefly at 0636z. This anomaly resulted in the loss of 36 frames of SSR data. The MOPs team repositioned the SSR pointers during the support and recovered all the affected data. * On day 326 (Nov 21), during the DSS-36 support, turbo decoder lock was lost briefly at 2204z. This anomaly resulted in the loss of four frames of SSR data. The MOPs team repositioned the SSR pointers during the support and recovered all the affected data. * As of day 329 (Nov 24), 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 7.3 Gbits during this week. Week 48 (Nov 25-Dec 01) * Ahead has thirteen passes during the week, all at 720 kbps, and overall coverage is nominal. * The 172nd momentum dump is scheduled for Tuesday, November 26th, with ignition at 20:15 UT. * APL will be closed November 28th and 29th for the Thanksgiving holiday. Week 49 (Dec 02-08) * Ahead has eleven passes during the week, all at 720 kbps, and overall coverage is nominal. * On Tuesday, December 3rd, a MOC IONET security scan is scheduled from 13:00 to 14:00 UT. Week 50 (Dec 09-15) * Ahead has thirteen passes during the week, all at 720 kbps, and overall coverage is nominal. * The seventeenth battery discharge event is scheduled for Monday, December 9th, at 18:40 UT. * The 73rd SECCHI stepped calibration roll is scheduled for Friday, December 13th, at 15:50 UT. Week 51 (Dec 16-22) * Ahead has twelve passes during the week, all at 720 kbps, and overall coverage is nominal. * There is a DSN network maintenance event scheduled for Tuesday, December 17th, from 00:00 to 04:00 UT. * There is a PIT test with station 25 scheduled for Thursday, December 19th, from 17:50 to 19:35 UT. There will be no SSR playback or instrument commanding during this test. * Beginning Friday, December 20th, SECCHI will be conducting special observations in conjunction with the Parker Solar Probe perihelia, through December 29 (days 355-364). Week 52 (Dec 23-29) * Ahead has fifteen passes during the week, all at 720 kbps, and overall coverage is nominal. A short pass was added on Thursday, December 26. * On Tuesday, December 24th, Solar Orbiter will have an off-point event in conjunction with the Parker Solar Probe perihelion. * APL will have a half day on Tuesday, December 24th and will be closed all day on Wednesday, December 25th, for the Christmas holiday. * There will be no telecon during the week, due to the holidays. Week 1 (Dec 30-Jan 5) * Ahead has thirteen passes during the week, all at 720 kbps, and overall coverage is nominal. * APL will have a half day on Tuesday, December 31, and will be closed all day on Wednesday, January 1st for the New Year holiday. * There will be no telecon during the week, due to the holidays. Week 2 (Jan 6-12) * Ahead has fourteen passes during the week, all at 720 kbps, and overall coverage is nominal. * The 173rd momentum dump is scheduled for Tuesday, January 7, at 18:00 UT. Other COORDINATED OBSERVATIONS ------------------------------------------------------------------------------- Scheduled activities for Week 47: M Nov 18 (323) T Nov 19 (324) W Nov 20 (325) T Nov 21 (326) F Nov 22 (327) S Nov 23 (328) S Nov 24 (329) ------------------------------------------------------------------------------- Scheduled activities for Week 48: M Nov 25 (330) T Nov 26 (331) Ahead: Momentum dump, 20:15 UT W Nov 27 (332) T Nov 28 (333) Thanksgiving Day F Nov 29 (334) S Nov 30 (335) S Dec 01 (336) ------------------------------------------------------------------------------- Scheduled activities for Week 49: M Dec 02 (337) T Dec 03 (338) W Dec 04 (339) T Dec 05 (340) F Dec 06 (341) S Dec 07 (342) S Dec 08 (343) ------------------------------------------------------------------------------- Scheduled activities for Week 50: M Dec 09 (344) Ahead: Battery discharge event, 18:40 UT T Dec 10 (345) W Dec 11 (346) T Dec 12 (347) F Dec 13 (348) Ahead: SECCHI stepped calibration roll, 15:50 UT S Dec 14 (349) S Dec 15 (350) ------------------------------------------------------------------------------- Scheduled activities for Week 51: M Dec 16 (351) T Dec 17 (352) W Dec 18 (353) T Dec 19 (354) F Dec 20 (355) PSP perihelion begins S Dec 21 (356) S Dec 22 (357) Notes: * PSP Perihelion Dec 20-29 ------------------------------------------------------------------------------- Scheduled activities for Week 52: M Dec 23 (358) T Dec 24 (359) SolO off-point, roll for PSP perihelion W Dec 25 (360) Christmas Day T Dec 26 (361) F Dec 27 (362) S Dec 28 (363) S Dec 29 (364) PSP perihelion ends Notes: * PSP Perihelion Dec 20-29 ------------------------------------------------------------------------------- Scheduled activities for Week 01: M Dec 30 (365) T Dec 31 (366) W Jan 01 (001) T Jan 02 (002) F Jan 03 (003) S Jan 04 (004) S Jan 05 (005) ------------------------------------------------------------------------------- Scheduled activities for Week 02: M Jan 06 (006) T Jan 07 (007) Ahead: Momentum dump, 18:00 UT W Jan 08 (008) T Jan 09 (009) F Jan 10 (010) S Jan 11 (011) S Jan 12 (012) ------------------------------------------------------------------------------- Upcoming events: 2025: * Feb 18 Solar Orbiter Venus flyby * Mar 11-28 Solar Orbiter Remote Sensing Window 19 * Mar 19-27 Parker Solar Probe perihelion pass * Mar 29-Apr 6 Solar Orbiter Remote Sensing Window 20 * Apr 7 Ahead: Mercury transit * Apr 25-30 Solar Orbiter Remote Sensing Window 21 * Jun 15-24 Parker Solar Probe perihelion pass * Sep 7-12 Solar Orbiter Remote Sensing Window 22 * Sep 13-23 Solar Orbiter Remote Sensing Window 23 * Sep 12-20 Parker Solar Probe perihelion pass * Oct 1-6 Solar Orbiter Remote Sensing Window 24 * Dec 9-17 Parker Solar Probe perihelion pass 2026: * Mar 8-16 Parker Solar Probe perihelion pass * Jun 4-12 Parker Solar Probe perihelion pass * Sep 1-9 Parker Solar Probe perihelion pass * 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