Changes between Version 218 and Version 219 of WikiStart


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Timestamp:
Feb 4, 2020 2:06:12 PM (5 years ago)
Author:
ybogdanova
Comment:

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  • WikiStart

    v218 v219  
    6262
    6363This period covers 8 Dec 2019 - 06 June 2020 (orbits 3067 – 3146). The Bryant plot for this period is on JSOCweb http://www.jsoc.rl.ac.uk/msp/bryant_msp4200_Dayside_2020.pdf.
    64 The period includes a season of ‘Short Eclipses’ in February - March 2020, when all instruments will be switched off. The dates for the eclipse period when the payload will be switched off: on SC3 and SC4 24/02/2020 12:00 - 15/03/2020 00:00 and on SC1 and SC2 are 24/02/2020 12:00 - 17/03/2020 00:00.
    65 
    66 During this eclipse season in order to accommodate BM1 requests for the Cluster /MMS conjunctions, payload will be switched on for the two periods: (i) 20/03/03 09:30 – 12:00 for 1.5h of the BM1 mode; (ii) 20/03/10 05:40 - 10:20 for 1h NM1 + 2.5h BM1+1h NM1.
    67 
    68 There is a moon eclipse on three spacecraft:  on C4 on 24 January 2020, 14:23 - 15:00; on C1 on 24 January 2020, 15:05 - 15:16; on C3 on 24 January 2020, 15:28-16:00, on C2 on 22 April 2020, 09:44-10:28; and on C1 on 22/04/2020, 10:06 - 10:49. Due to the different power profiles, the moon eclipse impact for each spacecraft varies. On C1, which is not affected much, there is no constraints on the payload and TDA6 periods, payload will stay on. On C1 the WBD operations are not allowed during the period 24/01/2020 12:00-18:00. On C3, there will be 'Power Limited' platform configuration: with the CIS, PEACE, WEC and FGM instruments being off during the period 24/01/2020 15:00 - 16:30. In addition, there will be no BM1 and BM2 modes allocated during the same interval, and no WBD operations during the interval 24/01/2020 12:00 - 18:00. On C4, all payload will be switched off for the period 24/01/2020 06:00 - 25/01/2020 00:00, there will not be any BM1 and BM2 modes allocated during the period 24/01/2020 00:00 - 25/01/2020 and no WBD operations during the period 24/01/2020 00:00 - 25/01/2020 00:00.
    69 
    70 There is also a moon eclipse on 22/04/2020 on C2 during the period 09:44-10:28, and on C1 during the period 10:06 - 10:49. The science operations will cease for several hours around eclipse times, due to lack of power. Exact time of power off TBD.
     64The period includes a season of ‘Short Eclipses’ in February - March 2020, when all instruments will be switched off.
     65
     66The dates for the short eclipse season when the payload will be switched off: on SC3 and SC4 24/02/2020 12:00 - 15/03/2020 00:00 and on SC1 and SC2 are 24/02/2020 12:00 - 17/03/2020 00:00.
     67
     68There is a moon eclipse on three spacecraft on 25/01/2020: on C4 on 24 January 2020, 14:23 - 15:00; on C1 on 24 January 2020, 15:05 - 15:16; and on C3 on 24 January 2020, 15:28-16:00. Due to the different power profiles, the moon eclipse impact for each spacecraft varies. On C1, which is not affected much, there is no constraints on the payload and TDA6 periods, payload will stay on. On C1 the WBD operations are not allowed during the period 24/01/2020 12:00-18:00. On C3, there will be 'Power Limited' platform configuration: with the CIS, PEACE, WEC and FGM instruments being off during the period 24/01/2020 15:00 - 16:30. In addition, there will be no BM1 and BM2 modes allocated during the same interval, and no WBD operations during the interval 24/01/2020 12:00 - 18:00. On C4, all payload will be switched off for the period 24/01/2020 06:00 - 25/01/2020 00:00, there will not be any BM1 and BM2 modes allocated during the period 24/01/2020 00:00 - 25/01/2020 and no WBD operations during the period 24/01/2020 00:00 - 25/01/2020 00:00.
     69
     70There is also a moon eclipse on 22/04/2020 on C2 during the period 09:44-10:28, and on C1 during the period 10:06 - 10:49. The science operations will cease for several hours around eclipse times, due to lack of power. Exact timing for the moon eclipse is: payload is off for the period 22/04/2020 00:00 - 22/04/2020 18:00 on both C1&C2; no WBD operations during the period 21/04/2020 06:00 - 22/04/2020 18:00 on both C1&C2; no BM1&BM2 intervals during the period 21/04/2020 12:00 - 22/04/2020 18:00 on both C1&C2.
    7171 
    7272There are manoeuvres during this period, and a list is included here http://jsocwiki.rl.ac.uk/attachment/wiki/WikiStart/manoeuvres_dec2019-may2020.pdf.