STEREO Weekly Meeting Minutes for 2012-12-18 (Week 51) ANNOUNCEMENTS ------------- * Because of the holidays, there will be no status meeting during the week of Dec 24, and the status meeting for the following week will be moved to Thursday, Jan 3. * On day 351 (Dec 16), the Ahead MOC ground system stopped processing telemetry data 1431z. Therefore, data products for DOY 349-352 (Dec 14-17) are incomplete. The problem appears to be a disk error on the archive server and the ground system engineer is investigating. All data will be re-processed once the system is back online. INSTRUMENT and SPACECRAFT STATUS -------------------------------- * All subsystems on both spacecraft are nominal. DISCUSSION AND OPERATIONS CONSTRAINTS ------------------------------------- Week 50 (Dec 10-16) * On day 345 (Dec 10), during the DSS-26 support for Ahead, turbo decoder lock was lost briefly at 1510z. This anomaly resulted in the loss of 45 frames of SSR data. See DR #G113498 for more information. * On day 348 (Dec 13), during the DSS-26 support for Ahead, turbo decoder lock was lost intermittently beginning at 1602z through 1607z. This anomaly resulted in the loss of 4253 frames of SSR data. See DR #N108579 for more information. * On day 351 (Dec 16), during the DSS-45 support for Ahead, turbo decoder lock was lost intermittently beginning at 1823z through 1904z. This anomaly resulted in the loss of 477 frames of SSR data. See DR #N108580 for more information. * On day 345 (Dec 10), the SSR science partitions on Ahead filled as follows: SWAVES (Part 13) reached 100% full at 0523z for 1.4 hours. SWAVES (Part 13) reached 100% full at 1858z for 1.6 hours. The primary cause was the accumulated shortage of track time throughout the week. The SWAVES team reports a larger amount of data missing than above--new telemetry files may need to be generated. * On day 346 (Dec 11), the SSR science partitions on Ahead filled as follows: SWAVES (Part 13) reached 100% full at 1203z for 2.9 hours. SWAVES (Part 13) reached 100% full at 1655z for 7.1 hours. IMPACT (Part 15) reached 95% full at 1255z for 2.0 hours. IMPACT (Part 15) reached 95% full at 1637z for 7.4 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 347 (Dec 12), the SSR science partitions on Ahead filled as follows: SWAVES (Part 13) remained 100% full at 0000z for 7.7 hours. SWAVES (Part 13) reached 100% full at 1257z for 8.5 hours. IMPACT (Part 15) remained 95% full at 0000z for 7.7 hours. IMPACT (Part 15) reached 95% full at 1158z for 9.6 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 348 (Dec 13), the SSR science partitions on Ahead filled as follows: SWAVES (Part 13) reached 100% full at 0710z for 7.4 hours. SWAVES (Part 13) reached 100% full at 2317z for 0.3 hours. IMPACT (Part 15) reached 95% full at 0611z for 8.6 hours. IMPACT (Part 15) reached 95% full at 2320z for 0.3 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 349 (Dec 14), the SSR science partitions on Ahead filled as follows: SWAVES (Part 13) remained 100% full at 0000z for 6.9 hours. SWAVES (Part 13) reached 100% full at 1316z for 9.1 hours. IMPACT (Part 15) remained 95% full at 0000z for 6.9 hours. IMPACT (Part 15) reached 95% full at 1230z for 9.8 hours. PLASTIC(Part 17) reached 95% full at 1659z for 5.3 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 350 (Dec 15), the SSR science partitions on Ahead filled as follows: SWAVES (Part 13) reached 100% full at 0546z for 1.1 hours. SWAVES (Part 13) reached 100% full at 1014z for 4.9 hours. SWAVES (Part 13) reached 100% full at 2018z for 0.2 hours. IMPACT (Part 15) reached 95% full at 0455z for 2.0 hours. IMPACT (Part 15) reached 95% full at 0952z for 5.2 hours. IMPACT (Part 15) reached 95% full at 1939z for 0.8 hours. PLASTIC (Part 17) reached 95% full at 0637z for 0.1 hours. PLASTIC (Part 17) reached 95% full at 1059z for 4.1 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 351 (Dec 16), the SSR science partitions on Ahead filled as follows: SWAVES (Part 13) reached 100% full at 1130z for 3.3 hours. IMPACT (Part 15) reached 95% full at 1130z for 3.3 hours. The primary cause was the accumulated shortage of track time throughout the week. These numbers may need to be updated once data processing is resumed. * The average daily SSR playback volume during the week was 2.2 gigabits for Ahead. This number may need to updated once data processing is resumed. * On day 345 (Dec 10), during the DSS-63 support for Behind, turbo decoder lock was lost briefly at 1625z. This anomaly resulted in the loss of one frame of SSR data. See DR #N108576 for more information. * On day 348 (Dec 13), during the DSS-26 support for Behind, turbo decoder lock was lost intermittently beginning at 1820z through 1822z. This anomaly resulted in the loss of 58 frames of SSR data. See DR #N108577 for more information. * On day 345 (Dec 10), the SECCHI-Behind instrument reset at 10:38:19z. The SECCHI team reconfigured the instrument to operational mode at 1650z. This was the 19th reset of SECCHI on the Behind spacecraft. * On day 348 (Dec 13), the SSR science partitions on Behind filled as follows: SWAVES (Part 13) reached 100% full at 0702z for 11.2 hours. IMPACT (Part 15) reached 95% full at 0540z for 12.9 hours. PLASTIC(Part 17) reached 95% full at 0722z for 11.0 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 349 (Dec 14), the SSR science partitions on Behind filled as follows: SWAVES (Part 13) reached 100% full at 0830z for 6.6 hours. SWAVES (Part 13) reached 100% full at 2301z for 0.98 hours. IMPACT (Part 15) reached 95% full at 0609z for 9.3 hours. IMPACT (Part 15) reached 95% full at 2137z for 2.4 hours. PLASTIC(Part 17) reached 95% full at 0652z for 8.4 hours. PLASTIC(Part 17) reached 95% full at 2202z for 1.98 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 350 (Dec 15), the SSR science partitions on Behind filled as follows: SWAVES(Part 13) remained 100% full at 0000z for 19.1 hours. IMPACT(Part 15) remained 95% full at 0000z for 19.3 hours. PLASTIC(Part 17) remained 95% full at 0000z for 19.1 hours. The primary cause was the accumulated shortage of track time throughout the week. * The average daily SSR playback volume during the week as 2.6 gigabits for Behind. * Because of the recent delays in receipt of telemetry, the MOC is expected to soon start routinely producing a version 04 of the level-0 telemetry files. Week 51 (Dec 17-23) * The 24th SECCHI stepped calibration roll on Ahead was carried out this morning (Dec 18). All indications are that the roll was nominal. * The 47th momentum dump on Behind is scheduled for Thursday, Dec 20, starting at 21:00 UT. * Ahead has 14 passes during the week, and overall coverage is short 8.7 hours. There are 70 meter passes on Friday, Dec 21, and Sunday, Dec 23, both using station 14. The station 26 passes on Wednesday, Dec 19, and Saturday, Dec 22, will both be carried out at 240 kbps. ESA New Norcia passes are scheduled for Wednesday, Dec 19, and Friday, Dec 21. * Behind has 11 passes during the week, and overall coverage is nominal. However, some partitions filled for 4-5 hours yesterday (Dec 17) due to carryover of lack of coverage from the previous week. There are 70 meter passes scheduled for Monday, Dec 17 (D14 at 720 kbps), Friday, Dec 21 (D63), and Saturday, Dec 22 (D14). The station 45 pass on Monday, Dec 17, and the station 26 pass on Thursday, Dec 20, will both be carried out at 160 kbps. An ESA Cebreros pass is scheduled for Thursday, Dec 20, and an ESA New Norcia pass is scheduled for Friday, Dec 21. Week 52 (Dec 24-30) * The MOC will be closed for the Christmas holiday Monday and Tuesday, Dec 24-25. There will be no status meeting during the week. * Ahead has 15 passes during the week, and overall coverage is nominal. There are no 70 meter passes. The station 26 pass on Thursday, Dec 27, will be carried out at 240 kbps. ESA New Norcia passes are scheduled for Wednesday, Thursday, and Friday (Dec 26-28). * Behind has 12 passes during the week, and overall coverage is nominal. There are 70 meter passes on Monday, Dec 24 (D14), Tuesday, Dec 25 (D63), Thursday, Dec 27 (D63), and Saturday, Dec 29 (D63). ESA New Norcia passes are scheduled for Wednesday and Thursday, Dec 26-27, and an ESA Cebreros pass is scheduled for Friday, Dec 28. Week 01 (Dec 31-Jan 6, 2013) * The MOC will be closed for the New Year holiday Monday, Dec 31, and Tuesday, Jan 1. The status meeting will be moved to Thursday, Jan 3. * Ahead has 12 passes during the week, and overall coverage is short 19.2 hours. There are no 70 meter passes during the week. The station 65 pass on Monday, Dec 31, and the station 26 passes on Tuesday, Jan 1, and Thursday, Jan 3, will be carried out at 240 kbps. ESA New Norcia passes are scheduled for Tuesday, Jan 1, and Thursday, Jan 3. * Behind has 10 passes during the week, and overall coverage is short 16.9 hours. There are 70 meter passes on Wednesday, Jan 2, and Saturday, Jan 5, both using station 63. The station 26 pass on Friday, Jan 4, will be carried out at 160 kbps. Week 02 (Jan 7-13) * HGA calibration maneuvers will be carried out on Ahead at 18:00 UT on Wednesday Jan 9, and on Behind on Thursday Jan 10 at 21:00 UT. * The 53rd momentum dump on Ahead is Friday Jan 11 at 18:00 UT. * Ahead has 13 passes during the week, and overall coverage is short 5.7 hours. There is a 70 meter pass on Thursday, Jan 10 (D63). The station 26 pass on Tuesday Jan 8, will be carried out at 240 kbps. ESA New Norcia passes will be carried out on Thursday, Jan 10, and Saturday, Jan 12. * Behind has 10 passes during the week, and overall coverage is short 19.6 hours. There are 70 meter passes on Tuesday, Jan 8, Friday, Jan 11, and Sunday Jan 13. all using station 63. The station 24 pass on Saturday, Jan 12, will be carried out at 160 kbps. ESA New Norcia passes will be carried out on Tuesday, Jan 8, and Saturday, Jan 12. Week 03 (Jan 14-20) * Ahead has 10 passes during the week, and overall coverage is short 29.4 hours. There are no 70 meter passes during the week. * Behind has 11 passes during the week, and overall coverage is short 11.6 hours. There are four 70 m passes, all on D63: Monday, Tuesday, Wednesday, and Thursday (Jan 14-17). The station 45 pass on Saturday (Jan 19) and the station 15 pass on Sunday (Jan 20) will be carried out at 160 kbps. ESA passes are scheduled for Wednesday and Thursday, Jan 16-17. Week 04 (Jan 21-27) * Ahead has 8 passes during the week, and overall coverage is short 21.25 hours. No 70 meter passes are scheduled during the week. The station 25 pass on Tuesday, Jan 22, and the station 26 passes on Saturday and Sunday, Jan 26-27, will all be carried out at 240 kbps. * Behind has 9 passes during the week, and overall coverage is short 22.4 hours. 70 meter passes are scheduled using station 26 each day between Monday to Friday, Jan 21-25. The station 45 pass on Friday, Jan 25, and the station 26 pass on Saturday, Jan 26, will both be carried out at 160 kbps. Week 05 (Jan 28-Feb 3) * The 48th momentum dump on Behind is scheduled for Monday, Jan 28, with ignition at 17:15 UT. * Ahead has 9 passes during the week, and overall coverage is short 23.8 hours. A 70 meter pass is scheduled for Sunday, Feb 3 (D14 at 720 kbps). The station 26 passes on Tuesday, Jan 29, Wednesday, Jan 30, and Friday, Feb 1, and the station 34 pass on Thursday, Jan 31, will all be carried out at 240 kbps. * Behind has 7 passes during the week, and overall coverage is short 13.2 hours. 70 meter passes are scheduled for Monday, Jan 28 (D63), Wednesday, Jan 30 (D63), Thursday, Jan 31 (D63), Friday, Feb 1 (D14), Saturday, Feb 2 (D14), and Sunday, Feb 3 (D63 at 720 kbps). Week 06 (Feb 4-10) * Ahead has 8 passes during the week, and overall coverage is short 13.2 hours. 70 meter passes are scheduled for Tuesday, Feb 5 (D63), Friday, Feb 8 (D14), and Saturday, Feb 9 (D14 at 720 kbps). The station 26 pass on Thursday, Feb 7, will be carried out at 240 kbps. * Behind has 8 passes during the week, and overall coverage is short 11 hours. 70 meter passes are scheduled for Monday, Feb 4, Tuesday, Feb 5, and Thursday, Feb 7, all using station 63. The station 65 pass on Wednesday, Feb 6, and the station 26 passes on Friday, Feb 8, and Sunday, Feb 10, will all be carried out at 160 kbps. Other * The cross support between DSN and ESA for STEREO has been extended into 2013. A new ESA station in Argentina will come online on January 1, and will be designated station 84. STEREO will start testing with this station in January. * The MOC will continue to monitor extra closely the command loss timer during this period of lower coverage. COORDINATED OBSERVATIONS ------------------------------------------------------------------------------- Scheduled activities for Week 51: M Dec 17 (352) T Dec 18 (353) Ahead: SECCHI stepped calibration roll, 10:15 UT W Dec 19 (354) T Dec 20 (355) Behind: Momentum dump, 21:00 UT F Dec 21 (356) S Dec 22 (357) S Dec 23 (358) Notes: * Significant telemetry shortfalls for both spacecraft are expected during the week. ------------------------------------------------------------------------------- Scheduled activities for Week 52: M Dec 24 (359) T Dec 25 (360) Christmas W Dec 26 (361) T Dec 27 (362) F Dec 28 (363) S Dec 29 (364) S Dec 30 (365) ------------------------------------------------------------------------------- Scheduled activities for Week 01: M Dec 31 (366) T Jan 01 (001) New Year W Jan 02 (002) T Jan 03 (003) F Jan 04 (004) S Jan 05 (005) S Jan 06 (006) Notes: * Significant telemetry shortfalls for both spacecraft are expected during the week. ------------------------------------------------------------------------------- Scheduled activities for Week 02: M Jan 07 (007) T Jan 08 (008) W Jan 09 (009) T Jan 10 (010) F Jan 11 (011) S Jan 12 (012) S Jan 13 (013) Notes: * Significant telemetry shortfalls for both spacecraft are expected during the week. ------------------------------------------------------------------------------- Scheduled activities for Week 03: M Jan 14 (014) T Jan 15 (015) W Jan 16 (016) T Jan 17 (017) F Jan 18 (018) S Jan 19 (019) S Jan 20 (020) Notes: * Significant telemetry shortfalls for both spacecraft are expected during the week. ------------------------------------------------------------------------------- Scheduled activities for Week 04: M Jan 21 (021) T Jan 22 (022) W Jan 23 (023) T Jan 24 (024) F Jan 25 (025) S Jan 26 (026) S Jan 27 (027) Notes: * Significant telemetry shortfalls for both spacecraft are expected during the week. ------------------------------------------------------------------------------- Scheduled activities for Week 05: M Jan 28 (028) T Jan 29 (029) W Jan 30 (030) T Jan 31 (031) F Feb 01 (032) S Feb 02 (033) S Feb 03 (034) Notes: * Significant telemetry shortfalls for both spacecraft are expected during the week. ------------------------------------------------------------------------------- Scheduled activities for Week 06: M Feb 04 (035) T Feb 05 (036) W Feb 06 (037) T Feb 07 (038) F Feb 08 (039) S Feb 09 (040) S Feb 10 (041) Notes: * Significant telemetry shortfalls for both spacecraft are expected during the week. ------------------------------------------------------------------------------- Upcoming events: 2013: * May 3 Ahead: Switch downlink rate to 120 kbps * Dec 12 Ahead: Mercury transit 2014: * Jan 20 Behind: End use of 480 kbps on 70 m DSN subnet * Apr 21 Behind: Resume use of 480 kbps on 70 m DSN subnet * Apr 29 Behind: Mercury transit * Oct 15 Behind: End use of 480 kbps on 70 m DSN subnet 2015: * Feb DAWN - Ceres arrival * Jan 20 - Mar 28 (TBC) Behind: Spacecraft behind Sun * Mar 17 - Jul 14 (TBC) Ahead: Spacecraft behind Sun * Jul 2 Behind: Resume use of 480 kbps on 70 m DSN subnet * Aug 25 - Oct 19 (TBC) Behind: Spacecraft behind Sun * Sep 25 Behind: End use of 480 kbps on 70 m DSN subnet * Jul DAWN - End of nominal mission 2016: * Apr 3 Behind: Resume use of 480 kbps on 70 m DSN subnet * Jul Juno arrival at Jupiter 2017: * Jul 11 Ahead: Switch downlink rate to 160 kbps * Jul 22 Behind: Switch downlink rate to 160 kbps 2018: * Mar 5 Ahead: Mercury transit