STEREO Weekly Meeting Minutes for 2023-05-30 (Week 22) 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 21 (May 22-28) * On day 145 (May 25), DSS-43 conducted a Return-To-Service (RTS) engineering demo track. The purpose was to verify X-band Telemetry, Tracking and Command operations after the completion of the Depot Level Maintenance. The MOC successfully received real- time telemetry, monitor data, and sent four commands. Turbo decoder lock was lost intermittently between 03:57 UT and 04:12 UT, due an elevation pointing error caused by Conscan being enabled. This anomaly resulted in the loss of 427 frames of real-time data. See DR #C117304 for more information. * On day 146 (May 26), the DSS-36 support was deleted to provide track time for TDRS-8 spacecraft emergency that was caused by the typhoon hitting Guam. STEREO track coverage remained adequate after the DSS-36 deletion. The issue with TDRS-8 will continue through week 28. * On day 146 (May 26), the SECCHI instrument reset at 22:49:11 UT. The SECCHI team reconfigured the instrument to operational mode by 23:39 UT. This was the 75th reset of the SECCHI instrument on the Ahead observatory. * On days 147-148 (May 27-28), APL conducted a commercial powered outage maintenance from day 147 at 09:30 UT through day 148 20:30 UT. The MOC operated on generator for the outage with no negative impact. * On day 148 (May 28), the SECCHI instrument reset at 07:28:25 UT. The SECCHI team reconfigured the instrument to operational mode by 20:21 UT. This was the 76th reset of the SECCHI instrument on the Ahead observatory. Not connected to reset on day 146. * As of day 148 (May 28), 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 6.0 Gbits during this week. Week 22 (May 29-Jun 4) * Ahead has nine tracks during the week, all at 720 kbps, and overall coverage is nominal. * APL was closed on Monday, May 29, for the Memorial Day holiday. * Canberra track times (on Wednesday, Friday and Sunday) have been adjusted for the TDRS-8 emergency. Track coverage is still adequate. Week 23 (Jun 5-11) * Ahead has eight tracks during the week, all at 720 kbps, and overall coverage is nominal. * The DSN mission network will be undergoing maintenance between 13:30-20:30 UT (9:30 AM to 4:30 PM, EDT) on Thursday, Jun 8. There are no STEREO passes during this period. * Thursday, day 159, there will be an adjustment to the track times for DSS-36. The schedule should be out later today (Tuesday). Week 24 (Jun 12-18) * Ahead has nine tracks during the week, all at 720 kbps, and overall coverage is nominal. * Monday June 12 is the 67th SECCHI step calibration at 16:50 UT. This is a bit earlier than normal so that it is before the SECCHI high downlink campaign (starting July 3). * The 157th momentum dump is scheduled for Tuesday, Jun 13, with ignition at 20:00 UT. * The Parker Solar Probe perihelion pass runs from Jun 17-27 (days 168-178). Week 25 (Jun 19-25) * Ahead has ten tracks during the week, all at 720 kbps, and overall coverage is nominal. Week 26 (Jun 26-Jul 2) * Ahead has ten tracks during the week, all at 720 kbps, and overall coverage is nominal. Week 27 (Jul 3-Jul 9) * Ahead has fifteen tracks during the week, all at 720 kbps, and overall coverage is nominal. * SECCHI high downlink campaign (Week 27-31) starts on July 3. * Tuesday, July 4, Independence Day, is an APL holiday. The status meeting that day is canceled * Tuesday, July 4 ESA Malargüe track 20:00 - 24:00 UT * Thursday, July 6 ESA Malargüe track 20:00 - 23:45 UT COORDINATED OBSERVATIONS ------------------------------------------------------------------------------- Scheduled activities for Week 22: M May 29 (149) Memorial Day T May 30 (150) W May 31 (151) T Jun 01 (152) F Jun 02 (153) S Jun 03 (154) S Jun 04 (155) ------------------------------------------------------------------------------- Scheduled activities for Week 23: M Jun 05 (156) T Jun 06 (157) W Jun 07 (158) T Jun 08 (159) F Jun 09 (160) S Jun 10 (161) S Jun 11 (162) ------------------------------------------------------------------------------- Scheduled activities for Week 24: M Jun 12 (163) Ahead: SECCHI Step Calibration T Jun 13 (164) Ahead: Momentum dump, 20:00 UT W Jun 14 (165) T Jun 15 (166) F Jun 16 (167) S Jun 17 (168) Start of Parker Solar Probe perihelion pass S Jun 18 (169) Notes: * Parker Solar Probe perihelion pass, Jun 17-27. ------------------------------------------------------------------------------- Scheduled activities for Week 25: M Jun 19 (170) T Jun 20 (171) Ahead: COR2 deep field W Jun 21 (172) Ahead: COR2 deep field T Jun 22 (173) Ahead: COR2 deep field F Jun 23 (174) Ahead: COR2 deep field S Jun 24 (175) S Jun 25 (176) Notes: * Parker Solar Probe perihelion pass, Jun 17-27. ------------------------------------------------------------------------------- Scheduled activities for Week 26: M Jun 26 (177) T Jun 27 (178) End of Parker Solar Probe perihelion pass Solar Orbiter Mercury transit W Jun 28 (179) T Jun 29 (180) F Jun 30 (181) S Jul 01 (182) S Jul 02 (183) Behind: Closest approach to Earth Notes: * Parker Solar Probe perihelion pass, Jun 17-27. ------------------------------------------------------------------------------- Scheduled activities for Week 27: M Jul 03 (184) Start of SECCHI high downlink campaign T Jul 04 (185) Operations telecon canceled W Jul 05 (186) T Jul 06 (187) F Jul 07 (188) S Jul 08 (189) S Jul 09 (190) ------------------------------------------------------------------------------- Upcoming events: 2023: * Jul 3-Aug 2 Ahead: SECCHI high downlink campaign * Aug 17 Ahead: Closest approach to Earth * Aug 21 Parker Solar Probe Venus flyby * Sep 23-Oct 3 Parker Solar Probe perihelion pass * Oct 1-10 Solar Orbiter Remote Sensing Window 10 * Oct 12-21 Solar Orbiter Remote Sensing Window 11 * Oct 23-Nov 1 Solar Orbiter Remote Sensing Window 12 * Nov 13 Solar Orbiter Full Disk Mosaic * Dec 25-Jan 3 Parker Solar Probe perihelion pass * Dec 28 Solar Orbiter off-point for Parker Solar Probe 2024: * Mar 13-24 Solar Orbiter Remote Sensing Window 13 * Mar 26-Apr 4 Parker Solar Probe perihelion pass * Mar 27-Apr 9 Solar Orbiter Remote Sensing Window 14 * Apr 12-15 Solar Orbiter Remote Sensing Window 15 * 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 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=NzM4NzAwIFdpbGxpYW0uVC5UaG9tcHNvbkBOQVNBLkdPViBTVEVSRU8tU0NJLU9QU52%2BBnrsGfjz&c=SIGNOFF ########################################################################