STEREO Weekly Meeting Minutes for 2024-05-14 (Week 20) 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 19 (May 6-12) * On day 128 (May 7), during the DSS-65 support, the beginning of track was delayed by 3.4 hours until 0653z, the antenna was Red following a network maintenance event, due to a LAN switch problem (Cisco 3524) preventing link connections at Madrid. This anomaly resulted in the loss of 3.1 hours of real-time telemetry, tracking, commanding, and SSR data. Due to the timing of the outage and track coverage, the SSR data could not be recovered, which resulted in the loss of 24.8 hours of science and housekeeping data for day 127-0605z thru 128-0655z. See DR #M116943 for more information. * On day 129 (May 8), during the DSS-35 support, APL network engineers successfully transitioned the MOC IONET to the new DSN UNICAST Monitor Data pathway. The MOPs team successfully tested both primary and backup ports. The MOC IONET will remain on the UNICAST Monitor Data pathway going forward. * The average daily science data return for Ahead was 5.6 Gbits during this week. Week 20 (May 13-19) * Ahead has eleven passes during the week, all at 720 kbps, and overall coverage is nominal. * On Thursday, May 16 an ESA Cebreros track is scheduled from 06:05 to 08:05 UT. Week 21 (May 20-26) * Ahead has ten passes during the week, all at 720 kbps, and overall coverage is nominal. * On Wednesday, May 22 an ESA Malargue track is scheduled from 07:50 to 10:45 UT. Week 22 (May 27-Jun 2) * Ahead has eleven passes during the week, all at 720 kbps, and overall coverage is nominal. * APL will be closed on Monday, May 27, for the Memorial Day holiday. * The 167th momentum dump is scheduled for Friday, May 31, with ignition at 18:30 UT. Week 23 (Jun 3-9) * Ahead has ten passes during the week, all at 720 kbps, and overall coverage is nominal. * On Thursday, June 6, a MOC IONET security scan is scheduled from 17:00 to 18:00 UT. Week 24 (Jun 10-16) * Ahead has ten passes during the week, all at 720 kbps, and overall coverage is nominal. Week 25 (Jun 17-23) * Ahead has ten passes during the week, all at 720 kbps, and overall coverage is nominal. * On Thursday, June 20, an ESA New Norcia track is scheduled from 23:10 UT to 01:10 UT on June 21. Other COORDINATED OBSERVATIONS ------------------------------------------------------------------------------- Scheduled activities for Week 20: M May 13 (134) T May 14 (135) W May 15 (136) T May 16 (137) F May 17 (138) S May 18 (139) S May 19 (140) ------------------------------------------------------------------------------- Scheduled activities for Week 21: M May 20 (141) T May 21 (142) W May 22 (143) T May 23 (144) F May 24 (145) S May 25 (146) S May 26 (147) ------------------------------------------------------------------------------- Scheduled activities for Week 22: M May 27 (148) Memorial Day holiday T May 28 (149) W May 29 (150) T May 30 (151) F May 31 (152) Ahead: Momentum dump, 18:30 UT S Jun 01 (153) S Jun 02 (154) ------------------------------------------------------------------------------- Scheduled activities for Week 23: M Jun 03 (155) T Jun 04 (156) W Jun 05 (157) T Jun 06 (158) F Jun 07 (159) S Jun 08 (160) S Jun 09 (161) ------------------------------------------------------------------------------- Scheduled activities for Week 24: M Jun 10 (162) T Jun 11 (163) W Jun 12 (164) T Jun 13 (165) F Jun 14 (166) S Jun 15 (167) S Jun 16 (168) ------------------------------------------------------------------------------- Scheduled activities for Week 25: M Jun 17 (169) T Jun 18 (170) W Jun 19 (171) T Jun 20 (172) F Jun 21 (173) S Jun 22 (174) S Jun 23 (175) ------------------------------------------------------------------------------- Upcoming events: 2024: * Jun 26-Jul 5 Parker Solar Probe perihelion pass * Sep 25-30 Solar Orbiter Remote Sensing Window 16 * Sep 26-Oct 5 Parker Solar Probe perihelion pass * Oct 2-15 Solar Orbiter Remote Sensing Window 17 * Oct 17-26 Solar Orbiter Remote Sensing Window 18 * Nov 6 Parker Solar Probe Venus flyby, in HI2-A field-of-view * Nov 6 Solar Orbiter full disk mosaic * Dec 24 Solar Obiter off-point and roll for Parker Solar Probe * 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