STEREO Weekly Meeting Minutes for 2025-02-18 (Week 8) 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 7 (Feb 10-16) * On day 041 (Feb 10), during the DSS-34 support, the transmitter was declared red, due to a hardware problem. This anomaly resulted in the loss of 1.9 hours of real-time commanding and 2-way tracking data. See DR #C118302 for more information. * On day 042 (Feb 11), during the DSS-36 support, the transmitter tripped offline at 19:46 UT, due to a hardware problem. This anomaly resulted in the loss of ten minutes of commanding, 2-way ranging, and 1927 frames of SSR data. The MOPs team repositioned the SSR pointers during the support and recovered all the affected data. See DR #C118306 for more information. * On day 045 (Feb 14), during the DSS-25 support, the transmitter was declared red, due to a hardware problem. This anomaly resulted in the loss of 2.5 hours of real-time commanding and 2-way tracking data. See DR #G124974 for more information. * On day 046 (Feb 15), during the DSS-25 support, the transmitter was declared red, due to a hardware problem. This anomaly resulted in the loss of 3.9 hours of real-time commanding and 2-way tracking data. See DR #G124979 for more information. * The average daily science data return for Ahead was 7.9 Gbits during this week. Week 8 (Feb 17-23) * Ahead has thirteen passes during the week, all at 720 kbps, and overall coverage is nominal. * Solar Orbiter will have a Venus flyby today, February 18. STEREO does not currently have any special observations planned for this event. * The 174th momentum dump is scheduled for Tuesday, February 18, at 18:45 UT. * On Wednesday morning, February 19th, the spacecraft trickle charge rate will be increased. This change is in response to an observation that cell 11 has been undercharging, and is an attempt to bring its full charge up to a level comparable with those of the other cells. * On Wednesday, February 19th, a MOC IONET security scan is scheduled from 14:00 to 16:00 UT. * There will be a power outage in APL bldg 17 between Friday, March 21, at 3pm, and Monday, March 24, at 8am (EDT) in order to accommodate a data center update. This outage should not have any impact on operations, but instrument teams should be aware and report any problems. Week 9 (Feb 24 - Mar 2) * Ahead has fourteen passes during the week, all at 720 kbps, and overall coverage is nominal. Week 10 (Mar 3-9) * Ahead has thirteen passes during the week, all at 720 kbps, and overall coverage is nominal. * There will be a STEREO instrument teams meeting March 3-4 at APL (hybrid). Anyone interested in participating is welcome. Please contact Lan Jian and cc Terry Kucera and Angelos Vourlidas. * The 74th SECCHI stepped calibration roll is scheduled for Wednesday, March 5th, at 12:35 UT. * Daylight Savings Time begins Sunday, March 9. Week 11 (Mar 10-16) * Ahead has sixteen passes during the week, all at 720 kbps, and overall coverage is nominal. * Solar Orbiter Remote Sensing Window 19 begins on Tuesday, March 11. * There is a DSN network maintenance event scheduled for Thursday, March 13. Week 12 (Mar 17-23) * Ahead has thirteen passes during the week, all at 720 kbps, and overall coverage is nominal. * SECCHI is observing the Parker Solar Probe perihelion beginning Wednesday, March 19. Week 13 (Mar 24-30) * Ahead has fifteen passes during the week, all at 720 kbps, and overall coverage is nominal. * Solar Orbiter Remote Sensing Window 20 begins on Saturday, March 29. Other COORDINATED OBSERVATIONS ------------------------------------------------------------------------------- Scheduled activities for Week 08: M Feb 17 (048) T Feb 18 (049) Solar Orbiter Venus flyby; Ahead: Momentum dump, 20:15 UT W Feb 19 (050) T Feb 20 (051) F Feb 21 (052) S Feb 22 (053) S Feb 23 (054) ------------------------------------------------------------------------------- Scheduled activities for Week 09: M Feb 24 (055) T Feb 25 (056) W Feb 26 (057) T Feb 27 (058) F Feb 28 (059) S Mar 01 (060) S Mar 02 (061) ------------------------------------------------------------------------------- Scheduled activities for Week 10: M Mar 03 (062) T Mar 04 (063) W Mar 05 (064) Ahead: SECCHI stepped calibration roll, 12:35 UT T Mar 06 (065) F Mar 07 (066) S Mar 08 (067) S Mar 09 (068) ------------------------------------------------------------------------------- Scheduled activities for Week 11: M Mar 10 (069) T Mar 11 (070) Solar Orbiter Remote Sensing Window 19 begins W Mar 12 (071) T Mar 13 (072) F Mar 14 (073) S Mar 15 (074) S Mar 16 (075) Notes: Solar Orbiter Remote Sensing Window 19, Mar 11-28 ------------------------------------------------------------------------------- Scheduled activities for Week 12: M Mar 17 (076) T Mar 18 (077) W Mar 19 (078) PSP perihelion begins T Mar 20 (079) F Mar 21 (080) S Mar 22 (081) S Mar 23 (082) Notes: Solar Orbiter Remote Sensing Window 19, Mar 11-28 Parker Solar Probe perihelion Mar 19-27 - HI1 20-min cadence (Radial w STA), Mar 18-20 - COR2 deep field (36 sec exp/5 min cadence) (Q+R w STA), Mar 21-24 ------------------------------------------------------------------------------- Scheduled activities for Week 13: M Mar 24 (083) T Mar 25 (084) W Mar 26 (085) T Mar 27 (086) PSP perihelion ends F Mar 28 (087) Solar Orbiter Remote Sensing Window 19 ends S Mar 29 (088) Solar Orbiter Remote Sensing Window 20 begins S Mar 30 (089) Notes: Solar Orbiter Remote Sensing Window 19, Mar 11-28 Parker Solar Probe perihelion Mar 19-27 - HI1 20-min cadence (Radial w STA), Mar 18-20 - COR2 deep field (36 sec exp/5 min cadence) (Q+R w STA), Mar 21-24 Solar Orbiter Remote Sensing Window 20, Mar 29-Apr 6 Upcoming events: 2025: * 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 1-16 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=NzM5MjQ2IHNoYWVsYS5pLmpvbmVzbWVjaG9sc2t5QE5BU0EuR09WIFNURVJFTy1TQ0ktT1BTID6aADWmLhmq&c=SIGNOFF ########################################################################