STEREO Weekly Meeting Minutes for 2013-01-15 (Week 3) ANNOUNCEMENTS ------------- * None INSTRUMENT and SPACECRAFT STATUS -------------------------------- * All subsystems on both spacecraft are nominal. DISCUSSION AND OPERATIONS CONSTRAINTS ------------------------------------- Week 02 (Jan 7-13) * On day 009 (Jan 9), during the DSS-65 track for Ahead, turbo decoder lock was lost intermittently beginning at 0724z through 0917z. This anomaly resulted in the loss of 109 frames of SSR data. See DR #N108599 for more information. * On day 010 (Jan 10), during the DSS-32 (ESA) support for Ahead, no commanding or ranging beginning at 0222z through 0645z (end of track) due to an intermittent fault on the X-Band Uplink Amplifier. ESA later identified the issue as a faulty Fiber-Optic cable, which has been replaced. This anomaly resulted in the loss of several minutes of SSR data during the transition from two-way to one-way downlink receiver mode. * On day 013 (Jan 13), during the DSS-24 track for Ahead, turbo decoder lock was lost briefly at 1651z and again at 1754z. This anomaly resulted in the loss of two frames of SSR data. See DR #G113607 for more information. * On day 007 (Jan 7), the SSR science partitions on Ahead filled as follows: SWAVES (Part 13) reached 100% full at 0240z for 4.4 hours. SWAVES (Part 13) reached 100% full at 1902z for 5.0 hours. IMPACT (Part 15) reached 95% full at 0027z for 7.0 hours. IMPACT (Part 15) reached 95% full at 1414z for 1.2 hours. IMPACT (Part 15) reached 95% full at 1724z for 1.2 hours. PLASTIC(Part 17) reached 95% full at 0244z for 4.6 hours. PLASTIC(Part 17) reached 95% full at 1907z for 4.9 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 007 (Jan 7) on Behind, and on day 008 (Jan 8) on Ahead, the MOPS permanent macro release 1.1.15 was loaded to C&DH RAM to increase the SSR housekeeping playback by four minutes to downlink more G&C black box data during the 120Kbps tracks only. * On day 008 (Jan 8), the SSR science partitions on Ahead filled as follows: SWAVES (Part 13) remained 100% full at 0000z for 15.1 hours. IMPACT (Part 15) remained 95% full at 0000z for 15.4 hours. PLASTIC(Part 17) remained 95% full at 0000z for 15.2 hours. The primary cause was the accumulated shortage of track time throughout the week. * The 17th HGA Calibration was successfully executed on Ahead at 1800Z on day 009 (Jan 9), and on Behind at 2100Z on day 010 (Jan 10). * On day 009 (Jan 9), the SSR science partitions on Ahead filled as follows: SWAVES (Part 13) reached 100% full at 0618z for 0.9 hours. IMPACT (Part 15) reached 95% full at 0336z for 3.8 hours. IMPACT (Part 15) reached 95% full at 1455z for 0.6 hours. PLASTIC(Part 17) reached 95% full at 0658z for 0.3 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 010 (Jan 10), the SSR science partitions on Ahead filled as follows: SWAVES (Part 13) reached 100% full at 0457z for 2.3 hours. SWAVES (Part 13) reached 100% full at 1907z for 1.6 hours. IMPACT (Part 15) reached 95% full at 0124z for 5.8 hours. IMPACT (Part 15) reached 95% full at 2007z for 0.8 hours. PLASTIC(Part 17) reached 95% full at 0535z for 1.6 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 011 (Jan 11), the 53th momentum dump was executed successfully on Ahead at 1800Z, which imparted a delta V of 0.086 m/sec. * On day 007 (Jan 7), during the DSS-65 track for Behind, turbo decoder lock was lost intermittently beginning at 1426z through 1615z. This anomaly resulted in the loss of 33 frames of SSR data. See DR #N108596 for more information. * On day 011 (Jan 11), during the DSS-63 track for Behind, initial telemetry lock was established late at 1638z due to maintenance working on the Hydrostatic Bearing Assembly. This anomaly resulted in the loss of one minute of SSR data. See DR #M107063 for more information. * On day 007 (Jan 7), the SSR science partitions on Behind filled as follows: SWAVES (Part 13) reached 100% full at 1222z for 3.1 hours. SWAVES (Part 13) reached 100% full at 2339z for 0.4 hours. IMPACT (Part 15) reached 95% full at 1233z for 3.1 hours. IMPACT (Part 15) reached 95% full at 2224z for 1.6 hours. PLASTIC(Part 17) reached 95% full at 1414z for 1.4 hours. PLASTIC(Part 17) reached 95% full at 2244z for 1.3 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 008 (Jan 8), the SSR science partitions on Behind filled as follows: SWAVES (Part 13) remained 100% full at 0000z for 0.3 hours. SWAVES (Part 13) reached 100% full at 1407z for 2.6 hours. IMPACT (Part 15) remained 95% full at 0000z for 0.5 hours. IMPACT (Part 15) reached 95% full at 1216z for 4.5 hours. PLASTIC(Part 17) remained 95% full at 0000z for 0.5 hours. PLASTIC(Part 17) reached 95% full at 1239z for 4.1 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 009 (Jan 9), the SSR science partitions on Behind filled as follows: SWAVES (Part 13) reached 100% full at 0131z for 13.9 hours. SWAVES (Part 13) reached 100% full at 2350z for 0.2 hours. IMPACT (Part 15) reached 95% full at 0225z for 13.3 hours. IMPACT (Part 15) reached 95% full at 2208z for 1.9 hours. PLASTIC(Part 17) reached 95% full at 0253z for 12.7 hours. PLASTIC(Part 17) reached 95% full at 2244z for 1.3 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 010 (Jan 10), the SSR science partitions on Behind filled as follows: SWAVES (Part 13) remained 100% full at 0000z for 18.5 hours. IMPACT (Part 15) remained 95% full at 0000z for 19.1 hours. IMPACT (Part 15) reached 95% full at 2157z for 0.9 hours. PLASTIC(Part 17) remained 95% full at 0000z for 18.7 hours. PLASTIC(Part 17) reached 95% full at 2231z for 0.1 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 011 (Jan 11), the SSR science partitions on Behind filled as follows: SWAVES (Part 13) reached 100% full at 1040z for 6.5 hours. SWAVES (Part 13) reached 100% full at 2218z for 1.7 hours. IMPACT (Part 15) reached 95% full at 0822z for 8.8 hours. IMPACT (Part 15) reached 95% full at 2238z for 1.4 hours. PLASTIC(Part 17) reached 95% full at 0844z for 8.5 hours. PLASTIC(Part 17) reached 95% full at 2259z for 1.0 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 012 (Jan 12), the SSR science partitions on Behind filled as follows: SWAVES (Part 13) remained 100% full at 0000z for 0.3 hours. SWAVES (Part 13) reached 100% full at 1141z for 8.3 hours. SWAVES (Part 13) reached 100% full at 2352z for 0.1 hours. IMPACT (Part 15) remained 95% full at 0000z for 0.5 hours. IMPACT (Part 15) reached 95% full at 1026z for 9.9 hours. IMPACT (Part 15) reached 95% full at 2300z for 1.0 hours. PLASTIC(Part 17) remained 95% full at 0000z for 0.5 hours. PLASTIC(Part 17) reached 95% full at 1026z for 9.7 hours. PLASTIC(Part 17) reached 95% full at 2315z for 0.8 hours. The primary cause was the accumulated shortage of track time throughout the week. * On day 013 (Jan 13), the SSR science partitions on Behind filled as follows: SWAVES (Part 13) remained 100% full at 0000z for 13.8 hours. IMPACT (Part 15) remained 95% full at 0000z for 13.8 hours. PLASTIC(Part 17) remained 95% full at 0000z for 13.8 hours. The primary cause was the accumulated shortage of track time throughout the week. * The average daily SSR playback volume during the week was 3.5 gigabits for Ahead, and 2.3 gigabits for Behind. Week 03 (Jan 14-20) * Station 15 experienced antenna glitch errors during the pass for Ahead on Monday, Jan 14, causing frames to be lost throughout the track. This effect was noted in both SECCHI and SWAVES data. * Beginning of track was late for the station 15 pass for Ahead this morning, (Jan 15) due to an elevation glitch, resulting in the loss of 1.25 hours of telemetry and commanding. The command loads originally scheduled for today have been moved to tomorrow. * Station 15 is currently red. * 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 (mostly Wed-Sun). There are four 70 m passes, all on D63: Monday, Tuesday, Wednesday, and Thursday (Jan 14-17). The station 26 and 45 passes 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) * MOPS macro release 1.1.15 will be loaded to EEPROM on Monday, Jan 21, for both spacecraft. * Ahead has 11 passes during the week, and overall coverage is short 10.25 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. ESA New Norcia passes are scheduled for Tuesday, Jan 22, and Thursday, Jan 24. * Behind has 13 passes during the week, and overall coverage is short 9.1 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. ESA New Norcia passes are scheduled for Tuesday and Wednesday, Jan 22-23, and Saturday and Sunday, Jan 26-27. 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 13 passes during the week, and overall coverage is short 13.4 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. ESA New Norcia passes are scheduled for Monday, Jan 28, and Wednesday, Jan 30. * Behind has 12 passes during the week, and overall coverage is short 2.4 hours on Jan 29. 70 meter passes are scheduled for Monday, Jan 28 (D63), Tuesday, Jan 29 (D14), Wednesday, Jan 30 (D63), Thursday, Jan 31 (D63), Friday, Feb 1 (D14), Saturday, Feb 2 (D14 at 720 kbps), and Sunday, Feb 3 (D63 at 720 kbps). The station 26 support on Tuesday, Jan 29, will be carried out at 160 kbps. ESA New Norcia supports are on Wednesday, Thursday, and Friday, Jan 30-Feb 1. Week 06 (Feb 4-10) * Ahead has 11 passes during the week, and overall coverage is even. 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. ESA New Norcia supports are on Wednesday and Thursday, Feb 6-7. * Behind has 11 passes during the week, and overall coverage is short 3.8 hours on day 37 (Feb 6). 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 Wednesday, Feb 6, Friday, Feb 8, and Sunday, Feb 10, will all be carried out at 160 kbps. ESA New Norcia supports are on Thursday and Friday, Feb 7-8. Week 07 (Feb 11-17) * Ahead has 10 passes during the week, and overall coverage is short by 5.5 hours, mainly on Wednesday and Thursday, Feb 13-14. 70 meter passes are scheduled for Tuesday, Feb 12 (D14), Friday, Feb 15 (D14 at 720 kbps), Saturday, Feb 16 (D63) and Sunday, Feb 17 (D14 at 720 kbps). The station 26 pass on Wednesday, Feb 26, will be carried out at 240 kbps. ESA New Norcia supports are on Tuesday and Wednesday, Feb 12-13. * Behind has 12 passes during the week, and overall coverage will be short by 6.5 hours, mainly on Tuesday and Wednesday, Feb 12-13. 70 meter passes are on Monday, Feb 11 (D14), Tuesday, Feb 12 (D63), and Friday, Feb 15 (D63 at 720 kbps). The D26 passes on Wednesday, Feb 13, and Saturday, Feb 16, will be at 240 kbps. ESA New Norcia supports are on Thursday, Feb 14, and Saturday, Feb 16, and ESA Cebreros on Thursday, Feb 14. Week 08 (Feb 18-24) * 54th momentum dump for Ahead Monday Feb 18 at 19:00 UT. * Ahead has 9 passes, and overall coverage is nominal. 70 meter passes are on Tuesday, Feb 19 (D63 at 720 kbps) and Wednesday-Saturday (D14), Feb 20-13. D26 passes on Monday, Feb 18, and Sunday, Feb 24, will be carried out at 240 kbps. * Behind has 11 tracks, and overall coverage is nominal. 70 meter passes are on Tuesday, Feb 19, Thursday, Feb 21, and Friday, Feb 22 (all on D63) and Sunday (D14 at 720 kbps). The D55 pass on Monday, Feb 18, and the D34 pass on Sunday, Feb 14, are both at 160 kbps. ESA New Norcia passes are scheduled for Wednesday, Feb 20, and Friday, Feb 22, and an ESA Cebreros pass for Friday, Feb 22. Week 09 (Feb 25-Mar 3) * Ahead has 11 passes during the week, and overall coverage is nominal. 70 meter passes are scheduled for Tuesday, Feb 26 (D63), Wednesday, Feb 27 (D14 at 720 kbps), Saturday, Mar 2 (D14), and Sunday, Mar 3 (D14). The station 26 and 45 passes on Monday, Feb 25, the station 26 pass on Thursday, Feb 28, and the station 65 pass on Sunday, Mar 3, will all be carried out at 240 kbps. An ESA New Norcia pass is scheduled for Thursday, Feb 28. * Behind has 13 passes during the week, and overall coverage is short 8.4 hours, mainly during the period from Thursday, Feb 28, to Friday, Mar 1. 70 meter passes are scheduled for Monday, Feb 25 (D14), Wednesday, Feb 27 (D14), Saturday, Mar 2 (D14 at 720 kbps), and Sunday, Mar 3 (D14 at 720 kbps). The station 24 pass on Tuesday, Feb 26, will be carried out at 160 kbps, and the station 26 pass on Thursday, Feb 28, will be carried out at 240 kbps. ESA New Norcia passes are scheduled for Tuesday, Feb 26, Wednesday, Feb 27, and Friday, Mar 1, and an ESA Cebreros pass is scheduled for Wednesday, Feb 27. COORDINATED OBSERVATIONS ------------------------------------------------------------------------------- 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) Behind: Momentum dump, 17:15 UT 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 the Behind spacecraft are expected during the week. ------------------------------------------------------------------------------- Scheduled activities for Week 07: M Feb 11 (042) T Feb 12 (043) W Feb 13 (044) T Feb 14 (045) F Feb 15 (046) S Feb 16 (047) S Feb 17 (048) Notes: * Significant telemetry shortfalls for both spacecraft are expected during the week. ------------------------------------------------------------------------------- Scheduled activities for Week 08: M Feb 18 (049) Ahead: Momentum dump, 19:00 UT T Feb 19 (050) W Feb 20 (051) T Feb 21 (052) F Feb 22 (053) S Feb 23 (054) S Feb 24 (055) ------------------------------------------------------------------------------- Scheduled activities for Week 09: M Feb 25 (056) T Feb 26 (057) W Feb 27 (058) T Feb 28 (059) F Mar 01 (060) S Mar 02 (061) S Mar 03 (062) Notes: * Significant telemetry shortfalls for the Behind 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