STEREO Weekly Meeting Minutes for 2025-06-10 (Week 24) 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 23 (June 2-8) * On day 154 (Jun 3), the 75th SECCHI stepped calibration was executed at 1450z for perihelion in the Ahead orbit. This was the 44th SECCHI stepped calibration roll conducted without gyro use. * On day 155 (Jun 4), APL network engineers successfully performed the MOC quarterly IONET IT security scans. * On day 158 (Jun 7), during the DSS-53 support, turbo decoder lock was lost briefly at 06:11 UT. This anomaly resulted in the loss of 14 frames of SSR data. The MOPs team repositioned the SSR pointers during the support and recovered all the affected data. * On day 159 (Jun 8), during the DSS-55 support, turbo decoder lock was lost briefly at 05:15 UT. This anomaly resulted in the loss of 100 frames of SSR data. The MOPs team repositioned the SSR pointers during the support and recovered all the affected data. See DR #M117985 for more information. * The average daily science data return for Ahead was 7.9 Gbits during this week. Week 24 (June 9-15) * Ahead has fifteen passes during the week, all at 720 kbps, and overall coverage is nominal. * The 18th battery discharge cycle is scheduled for Wednesday, June 11, starting at 17:40 UT. * APL will be undergoing power maintenance starting Friday, June 13, at 19:00 UT, and continuing until Monday, June 16 at 12:00 UT. The MOC shouldn't be impacted. * SECCHI will be conducting special observations in conjunction with the Parker Solar Probe perihelion beginning Sunday, June 15 and ending Tuesday, June 22nd. Week 25 (June 16-22) * Ahead has sixteen passes during the week, all at 720 kbps, and overall coverage is nominal. * A DSN network maintenance event is scheduled on Monday, June 16th, from 10:30 to 14:30 UT. * The 177th momentum dump is scheduled on Wednesday, June 18th, at 13:00 UT. * There is a PIT test scheduled for Wednesday, June 19th, from 18:15 to 20:15 UT. There will be no SSR playback or instrument commanding during this test. Week 26 (June 23-29) * Ahead has seventeen passes during the week, all at 720 kbps, and overall coverage is nominal. Week 27 (June 30 - July 6) * Ahead has seventeen passes during the week, all at 720 kbps, and overall coverage is nominal. * APL will be closed on Friday, July 4th, for Independence Day. Week 28 (July 7-13) * Ahead has twelve passes during the week, all at 720 kbps, and overall coverage is nominal. Week 29 (July 14-20) * Ahead has fourteen passes during the week, all at 720 kbps, and overall coverage is nominal. Other COORDINATED OBSERVATIONS ------------------------------------------------------------------------------- Scheduled activities for Week 24: M Jun 09 (160) T Jun 10 (161) W Jun 11 (162) Ahead: Battery discharge cycle, 17:40 UT T Jun 12 (163) F Jun 13 (164) S Jun 14 (165) S Jun 15 (166) PSP perihelion begins Notes: * Parker Solar Probe perihelion pass, June 15-22: - COR2 deep field (36 sec exp/5 min cadence) (Opp+Q w STA; R w Earth), Jun 19-22 ------------------------------------------------------------------------------- Scheduled activities for Week 25: M Jun 16 (167) T Jun 17 (168) W Jun 18 (169) Ahead: Momentum Dump, 13:00 UT T Jun 19 (170) F Jun 20 (171) S Jun 21 (172) S Jun 22 (173) PSP perihelion ends Notes: * Parker Solar Probe perihelion pass, June 15-22: - COR2 deep field (36 sec exp/5 min cadence) (Opp+Q w STA; R w Earth), Jun 19-22 ------------------------------------------------------------------------------- Scheduled activities for Week 26: M Jun 23 (174) T Jun 24 (175) W Jun 25 (176) T Jun 26 (177) F Jun 27 (178) S Jun 28 (179) S Jun 29 (180) ------------------------------------------------------------------------------- Scheduled activities for Week 27: M Jun 30 (181) T Jul 01 (182) W Jul 02 (183) T Jul 03 (184) F Jul 04 (185) Independence Day holiday S Jul 05 (186) S Jul 06 (187) ------------------------------------------------------------------------------- Scheduled activities for Week 28: M Jul 07 (188) T Jul 08 (189) W Jul 09 (190) T Jul 10 (191) F Jul 11 (192) S Jul 12 (193) S Jul 13 (194) ------------------------------------------------------------------------------- Scheduled activities for Week 29: M Jul 14 (195) T Jul 15 (196) W Jul 16 (197) T Jul 17 (198) F Jul 18 (199) S Jul 19 (200) S Jul 20 (201) Upcoming events: 2025: * 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 ######################################################################## 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=NzM5NDA3IGxhbi5qaWFuQE5BU0EuR09WIFNURVJFTy1TQ0ktT1BTILQVWhe00afS&c=SIGNOFF ########################################################################