STEREO Weekly Meeting Minutes for 2024-03-26 (Week 13) 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 12 (Mar 18-24) * On day 081 (Mar 21), during the DSS-36 support, turbo decoder lock was lost briefly at 1708z. This anomaly resulted in the loss of four frames of SSR data. The MOPs team repositioned the SSR pointers during the support and recovered all the affected data. * On day 081 (Mar 21), the 165th momentum dump was executed successfully at 1730z, which imparted an estimated delta V of 0.047 m/sec. This was the 84th momentum dump conducted without gyro use. After thruster operations completed, there was a 0.8 degree of roll angle error. Fine pointing stabilized 2.2 minutes after completion of the momentum dump. * The average daily science data return for Ahead was 6.7 Gbits during this week. 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, running from days 87-100, March 27 to April 9. 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. Week 15 (April 8-14) * Ahead has fifteen passes during the week, all at 720 kbps, and overall coverage is nominal. * The SECCHI high downlink campaign for the solar eclipse continues until April 15. * The solar eclipse occurs on Monday, April 8. * The Solar Orbiter Remote Sensing Window 15 runs from April 12-15. Week 16 (Apr 15-21) * Ahead has eleven passes during the week, all at 720 kbps, and overall coverage is nominal. * The SECCHI high downlink campaign for the solar eclipse ends Monday, April 15. * On Wednesday, April 17 an ESA Cebreros track is scheduled from 05:25 to 06:55 UT. * The 70th SECCHI stepped calibration roll is scheduled for Saturday, April 20, starting at 10:55 UT. Week 17 (April 22-28) * Ahead has twelve passes during the week, all at 720 kbps, and overall coverage is nominal. * The 166th momentum dump is scheduled for Tuesday, April 23, with ignition at 13:30 UT. * An ESA Cebreros track is scheduled for Wednesday, April 24 from 04:45-06:45 UT. Week 18 (April 29 - May ) * Ahead has eleven passes during the week, all at 720 kbps, and overall coverage is nominal. Other COORDINATED OBSERVATIONS ------------------------------------------------------------------------------- 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) Betelgeuse campaign 12:00-14:00 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 * Betelgeuse campaign: - HI-2 short-exposure, high-resolution - 1 HI-1 image - no EUVI, COR1 or COR2 ------------------------------------------------------------------------------- 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) End of PSP Perihelion F Apr 05 (096) S Apr 06 (097) S Apr 07 (098) Begin COR2 pB 5-min program Notes: * PSP Perihelion, March 26 - April 4 * Solar Orbiter Remote Sensing Window 14, March 27-April 9 * SECCHI 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 ------------------------------------------------------------------------------- Scheduled activities for Week 15: M Apr 08 (099) Solar Eclipse T Apr 09 (100) End of Solar Orbiter Remote Sensing Window 14 W Apr 10 (101) T Apr 11 (102) F Apr 12 (103) Start of Solar Orbiter Remote Sensing Window 15 S Apr 13 (104) S Apr 14 (105) Notes: * Solar Orbiter Remote Sensing Window 14, March 27-April 9 * Solar Orbiter Remote Sensing Window 15, April 12-15 * SECCHI 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 ------------------------------------------------------------------------------- Scheduled activities for Week 16: M Apr 15 (106) End of SECCHI high downlink campaign; End of SolO RSW 15 T Apr 16 (107) W Apr 17 (108) T Apr 18 (109) F Apr 19 (110) Betelgeuse campaign, 12:00-14:00 S Apr 20 (111) Ahead: SECCHI stepped calibration roll, 10:55 UT S Apr 21 (112) Notes: * Solar Orbiter Remote Sensing Window 15, April 12-15 * SECCHI High-downlink Campaign for solar eclipse: April 1-15 - COR2 2.5dd-min + HI1 20-min, April 1-6 - COR2 pB 5-min program, April 7-9 * Betelgeuse campaign: - HI-2 short-exposure, high-resolution - 1 HI-1 image - no EUVI, COR1 or COR2 ------------------------------------------------------------------------------- Scheduled activities for Week 17: M Apr 22 (113) T Apr 23 (114) Ahead: Momentum dump, 13:30 UT W Apr 24 (115) T Apr 25 (116) F Apr 26 (117) Betelgeuse campaign, 12:00-14:00 S Apr 27 (118) S Apr 28 (119) Notes: * Betelgeuse campaign: - HI-2 short-exposure, high-resolution - 1 HI-1 image - no EUVI, COR1 or COR2 ------------------------------------------------------------------------------- Scheduled activities for Week 18: M Apr 29 (120) T Apr 30 (121) W May 01 (122) T May 02 (123) F May 03 (124) Betelgeuse campaign, 12:00-14:00 S May 04 (125) S May 05 (126) Notes: * Betelgeuse campaign: - HI-2 short-exposure, high-resolution - 1 HI-1 image - no EUVI, COR1 or COR2 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