STEREO Weekly Meeting Minutes for 2019-10-01 (Week 40) ANNOUNCEMENTS ------------- * Oct 25 is the 13th anniversary of the STEREO launch. * Owen Dudley will be taking over for Dan Ossing as the mission operations manager on October 1st. Dan will become mission operations manager for IMAP. * The Heliophysics Senior Review proposals are now due Feb. 20th. * The STEREO Data Server at UCLA is down. Alternate sources for these data are being identified. * The SSC reports that ftp access via stereoftp has been discontinued, as per NASA directive. An ftps service on stereoftp will be active shortly. Otherwise, instrument teams that get their data via ftp from the server will have to change their scripts to get the data from https://stereo-ssc.nascom.nasa.gov. * The sohoftp server that distributes SolarSoft is no longer available from outside NASA. Information on how to install and update SolarSoft under the new system is available at https://stereo-ssc.nascom.nasa.gov/solarsoft_wget.shtml INSTRUMENT and SPACECRAFT STATUS -------------------------------- * Ahead is operating nominally. * 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 39 (Sep 23-29) * The average daily science data return for Ahead was 5.6 Gbits during this week. Week 40 (Sep 30-Oct 6) * Ahead has eleven passes during the week, and overall coverage is nominal. There are ten passes at 720 kbps, and one at 480 kbps. Week 41 (Oct 7-Oct 13) * ESA Malargue will shadow track to test the SLE V4 configurations and the 240 kbps downlink. On day 281 (Oct 8) ESA Malargue will be shadowing Goldstone station 24 for 2 hours. On day 282 (Oct 9) there will be a dataflow test SLEv4 bind test starting at 19:00 UT, lasting for 2 hours at 240 kbps. * Ahead has nine passes during the week, and overall coverage is nominal. There are six passes at 720 kbps, two at 480 kbps, and one at 360 kbps. Week 42 (Oct 14-Oct 20) * Ahead has nine passes during the week, and overall coverage is nominal with the addition of an ESA Malargue track. ESA Malargue will provide 4.8 hours of track coverage on day 289 (Oct 16). There are six passes at 720 kbps, one at 360 kbps, one at 240 kbps, and one at 160 kpbs. Week 43 (Oct 21-Oct 27) * The 50th SECCHI stepped calibration roll for perihelion is scheduled for day 295 (Oct 22) at 15:25 UTC. System momentum is expected to be 7 N-m-s. This will be the 19th calibration roll without using the gyros. * Day 296 (Oct 23) is the predicted Ahead perihelion. * Day 298 (Oct 25) is the 13th anniversary of the launch of STEREO * Ahead has nine passes during the week, and overall coverage is nominal. There are three passes at 720 kbps, four at 480 kbps, one at 240 kbps, and one at 160 kpbs. Week 44 (Oct 28 - Nov 3) * Day 305 (Nov 1) is the 123rd momentum dump for Ahead. Ignition is now at 21:30 UTC. This is the 42nd momentum dump done without using gyros for rate information. The momentum dump will be carried out during an ESA Malargue pass. * Day 307 (Nov 3) daylight savings time ends in the US. Clocks will be set back one hour. * Ahead has ten passes during the week, and overall coverage is nominal. There are six passes at 720 kbps, two at 480 kbps, one at 240 kbps, and one at 160 kpbs. Week 45 (Nov 4-10) * Ahead has ten passes during the week, and overall coverage is nominal. There are eight passes at 720 kbps, one at 360 kbps, and one at 240 kbps. Other * The annual STEREO assessment review is tentatively scheduled for Wednesday, Nov 20, one week before Thanksgiving. COORDINATED OBSERVATIONS ------------------------------------------------------------------------------- Scheduled activities for Week 36: M Sep 2 (245) Labor Day holiday Ahead: SECCHI COR2, EUVI 171 long exposures T Sep 3 (246) Ahead: SECCHI COR2, EUVI 171 long exposures W Sep 4 (247) T Sep 5 (248) F Sep 6 (249) S Sep 7 (250) Ahead: End SECCHI observations for Parker Solar Probe S Sep 8 (251) Notes: * Parker Solar Probe perihelion pass, Aug 28-Sep 7 ------------------------------------------------------------------------------- Scheduled activities for Week 37: M Sep 09 (252) T Sep 10 (253) W Sep 11 (254) Ahead: HI1-WISPR campaign T Sep 12 (255) Ahead: HI1-WISPR campaign F Sep 13 (256) Ahead: HI1-WISPR campaign S Sep 14 (257) S Sep 15 (258) ------------------------------------------------------------------------------- Scheduled activities for Week 38: M Sep 16 (259) T Sep 17 (260) Ahead: Momentum dump, 16:00 UT W Sep 18 (261) T Sep 19 (262) F Sep 20 (263) S Sep 21 (264) S Sep 22 (265) ------------------------------------------------------------------------------- Scheduled activities for Week 39: M Sep 23 (266) T Sep 24 (267) W Sep 25 (268) T Sep 26 (269) F Sep 27 (270) S Sep 28 (271) S Sep 29 (272) ------------------------------------------------------------------------------- Scheduled activities for Week 40: M Sep 30 (273) T Oct 01 (274) W Oct 02 (275) T Oct 03 (276) F Oct 04 (277) S Oct 05 (278) S Oct 06 (279) ------------------------------------------------------------------------------- Scheduled activities for Week 41: M Oct 07 (280) T Oct 08 (281) Ahead: ESA Malargue shadow test with STA 24 W Oct 09 (282) Ahead: ESA Malargue dataflow SLEv4 bind test T Oct 10 (283) F Oct 11 (284) S Oct 12 (285) S Oct 13 (286) ------------------------------------------------------------------------------- Scheduled activities for Week 42: M Oct 14 (287) T Oct 15 (288) W Oct 16 (289) T Oct 17 (290) F Oct 18 (291) S Oct 19 (292) S Oct 20 (293) ------------------------------------------------------------------------------- Scheduled activities for Week 43: M Oct 21 (294) T Oct 22 (295) Ahead: SECCHI stepped calibration roll, 15:25 UTC W Oct 23 (296) Ahead: Perihelion T Oct 24 (297) F Oct 25 (298) 13th STEREO launch anniversary S Oct 26 (299) S Oct 27 (300) ------------------------------------------------------------------------------- Scheduled activities for Week 44: M Oct 28 (301) T Oct 29 (302) W Oct 30 (303) T Oct 31 (304) F Nov 01 (305) Ahead: Momentum dump, 21:30 UTC S Nov 02 (306) S Nov 03 (307) Daylight savings time ends in US ------------------------------------------------------------------------------- Scheduled activities for Week 45: M Nov 04 (308) Ahead: Close approach of Parker Solar Probe T Nov 05 (309) W Nov 06 (310) T Nov 07 (311) F Nov 08 (312) S Nov 09 (313) S Nov 10 (314) ------------------------------------------------------------------------------- Upcoming events: Behind events are contingent on recovering the spacecraft. 2019: * Dec 26 Parker Solar Probe Venus flyby 2020: * Jan 24-Feb 4 Parker Solar Probe perihelion pass * May Behind: Switch downlink rate to 360 kbps for 34 meter * Jun Ahead: Switch downlink rate to 360 kbps for 34 meter * Jun Behind: Switch downlink rate to 480 kbps for 34 meter * Jun 2-13 Parker Solar Probe perihelion pass * Jul 11 Parker Solar Probe Venus flyby, in HI2-A field-of-view * Sep Ahead: Switch downlink rate to 480 kbps for 34 meter * Sep 22-Oct 2 Parker Solar Probe perihelion pass 2021: * Jan 13-23 Parker Solar Probe perihelion pass * Feb 20 Parker Solar Probe Venus flyby * Apr 25-May 4 Parker Solar Probe perihelion pass * Jul Behind: Switch downlink rate to 720 kbps for 34 meter * Aug Ahead: Switch downlink rate to 720 kbps for 34 meter * Aug 5-15 Parker Solar Probe perihelion pass * Oct 16 Parker Solar Probe Venus flyby * Nov 17-26 Parker Solar Probe perihelion pass 2022: * Feb 21-Mar 2 Parker Solar Probe perihelion pass * May 28-Jun 7 Parker Solar Probe perihelion pass * Sep 2-11 Parker Solar Probe perihelion pass * Dec 7-16 Parker Solar Probe perihelion pass 2023: * Mar 13-23 Parker Solar Probe perihelion pass * May 5 Behind: Mercury transit * Jun 17-27 Parker Solar Probe perihelion pass * Jul 17 Behind: Closest approach to Earth * Aug 13 Ahead: Closest approach to Earth * Aug 21 Parker Solar Probe Venus flyby * Sep 23-Oct 3 Parker Solar Probe perihelion pass * Dec 25-Jan 3 Parker Solar Probe perihelion pass 2024: * Mar 26-Apr 4 Parker Solar Probe perihelion pass * Jun 26-Jul 5 Parker Solar Probe perihelion pass * Sep 26-Oct 5 Parker Solar Probe perihelion pass * Nov 6 Parker Solar Probe Venus flyby, in HI2-A field-of-view * Dec 20-29 Parker Solar Probe perihelion pass 2025: * Mar 19-27 Parker Solar Probe perihelion pass * Apr 7 Ahead: Mercury transit * Jun 15-24 Parker Solar Probe perihelion pass 2026: 2027: * Feb 1 Behind: Mercury transit 2028: 2029: * Jun 30 Ahead: Mercury transit