STEREO Weekly Meeting Minutes for 2024-02-27 (Week 9) ANNOUNCEMENTS ------------- * Last week was the nominal deadline to submit comments or questions to Dan Wilson regarding the Health Assessment slide deck, and he will begin working on the minutes soon. However, if anyone has remaining questions please feel free to reach out to Dan. 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 8 (Feb 19-25) * On day 051 (Feb 20), during the DSS-26 support, the transmitter was declared red, due to a hardware problem. This anomaly resulted in the loss of 2.1 hours of real-time commanding and 2-way tracking data. See DR #G124328 for more information. * On day 055 (Feb 24), during the DSS-56 support, the beginning of track was delayed 25 minutes until 0530z, due to a hardware problem. This anomaly resulted in the loss of 25 minutes of real-time telemetry, commanding, tracking, and SSR data. The MOPs team repositioned the SSR pointers during the track and recovered all the affected data. See DR # M116771 for more information. * On day 051 (Feb 20), the 164th momentum dump was executed successfully at 1500z, which imparted an estimated delta V of 0.061 m/sec. This was the 83rd momentum dump conducted without gyro use. After thruster operations completed, there was a 1.4 degree of roll angle error. Fine pointing stabilized 2.9 minutes after completion of the momentum dump. * The average daily science data return for Ahead was 6.8 Gbits during this week. Week 9 (Feb 26-Mar 3) * Ahead has ten passes during the week, all at 720 kbps, and overall coverage is nominal. Week 10 (Mar 4-Mar 10) * Ahead has fourteen passes during the week, all at 720 kbps, and overall coverage is nominal. * Daylight Savings Time begins Sunday, Mar 10. Week 11 (Mar 11-17) * Ahead has eleven passes during the week, all at 720 kbps, and overall coverage is nominal. * The 13th SolO Remote sensing window begins Tuesday, March 13th, ends March 24th. Week 12 (Mar 18-24) * Ahead has eleven passes during the week, all at 720 kbps, and overall coverage is nominal. * The 165th momentum dump is scheduled for Thursday, Mar 21, with ignition at 17:30 UT. * Saturday, March 23 through Sunday, March 24, SECCHI is observing the STEREO-SolO orbital conjunction. * The 13th SolO Remote sensing window ends Sunday, March 24th. Week 13 (Mar 25-31) * Ahead has ten passes during the week, all at 720 kbps, and overall coverage is nominal. * Tuesday, March 26th SECCHI is observing the Parker Solar Probe perihelion, which will cover day of year 86 - 95. * An ESA Malargue track is scheduled for Wednesday, March 27, from 08:15-10:15 UT at 720 kbps. * Wednesday, March 27, the SolO 14th remote sensing window begins. Week 14 (Apr 1-7) * Ahead has fourteen passes during the week, all at 720 kbps, and overall coverage is nominal. * On Monday, April 1, SECCHI will begin a high downlink campaign for the total solar eclipse, extending until April 15. Other COORDINATED OBSERVATIONS ------------------------------------------------------------------------------- Scheduled activities for Week 08: M Feb 19 (050) T Feb 20 (051) Ahead: Momentum dump, 15:00 UT W Feb 21 (052) T Feb 22 (053) F Feb 23 (054) S Feb 24 (055) S Feb 25 (056) ------------------------------------------------------------------------------- Scheduled activities for Week 09: M Feb 26 (057) T Feb 27 (058) W Feb 28 (059) T Feb 29 (060) F Mar 01 (061) S Mar 02 (062) S Mar 03 (063) ------------------------------------------------------------------------------- Scheduled activities for Week 10: M Mar 04 (064) T Mar 05 (065) W Mar 06 (066) T Mar 07 (067) F Mar 08 (068) S Mar 09 (069) S Mar 10 (070) Daylight Savings Time begins ------------------------------------------------------------------------------- Scheduled activities for Week 11: M Mar 11 (071) T Mar 12 (072) W Mar 13 (073) Start of Solar Orbiter Remote Sensing Window 13 T Mar 14 (074) F Mar 15 (075) S Mar 16 (076) S Mar 17 (077) Notes: * Solar Orbiter Remote Sensing Window 13, Mar 13-24 ------------------------------------------------------------------------------- Scheduled activities for Week 12: M Mar 18 (078) T Mar 19 (079) W Mar 20 (080) T Mar 21 (081) Ahead: Momentum dump F Mar 22 (082) S Mar 23 (083) Solar Orbiter Conjunction begins S Mar 24 (084) Solar Orbiter Conjunction ends ------------------------------------------------------------------------------- Scheduled activities for Week 13: M Mar 25 (085) T Mar 26 (086) PSP Perihelion begins W Mar 27 (087) Solar Orbiter Remote Sensing Window 14 T Mar 28 (088) F Mar 29 (089) S Mar 30 (090) S Mar 31 (091) Notes: * PSP Perihelion, March 26 - April 4 * Solar Orbiter Remote Sensing Window 14, March 27-April 9 ------------------------------------------------------------------------------- Scheduled activities for Week 14: M Apr 01 (092) Begin COR2 2.5-min + HI1 20-min T Apr 02 (093) W Apr 03 (094) T Apr 04 (095) F Apr 05 (096) S Apr 06 (097) S Apr 07 (098) Begin COR2 pB 5-min program Notes: * Solar Orbiter Remote Sensing Window 14, March 27-April 9 * High-downlink Campaign for solar eclipse: April 1-15 - COR2 2.5-min + HI1 20-min, April 1-6 - COR2 pB 5-min program, April 7-9 Upcoming events: 2024: * Mar 13-24 Solar Orbiter Remote Sensing Window 13 * Mar 23-24 Solar Orbiter Conjunction * Mar 26-Apr 4 Parker Solar Probe perihelion pass * Mar 27-Apr 9 Solar Orbiter Remote Sensing Window 14 * Apr 1-6 COR2 2.5-min + HI1 20-min * Apr 7-9 COR2 pB 5-min program * Apr 8 Solar Eclipse * Apr 10 COR2 regular synoptic + 20-min HI1 * Apr 11-15 COR2 2.5-min + HI1 20-min * Apr 12-15 Solar Orbiter Remote Sensing Window 15 * 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 Sensint 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 ######################################################################## 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=NzM4OTE3IHNoYWVsYS5pLmpvbmVzbWVjaG9sc2t5QE5BU0EuR09WIFNURVJFTy1TQ0ktT1BTIO9v7Bj6dQiR&c=SIGNOFF ########################################################################