Sector 86



Sector 86 Information

Sector Summary

  • Sector dates: Nov 21 to Dec 18 2024
  • Pointing: Northern hemisphere
  • Days of Science Data Collection: 25.94
  • Days of Paused Data Collection: 0.63



    • Spacecraft Pointing (deg)

    RA dec roll
    Spacecraft 42.67 75.89 32.58
    Camera 1 67.71 41.6 100.11
    Camera 2 58.01 64.95 108.06
    Camera 3 344.13 82.46 0.33
    Camera 4 270.86 64.87 72.0



    Orbit Summary

    Orbits Dates (UTC)

    Start - End

    		 Cadence #

    Start - End

    		 Momentum dumps
    179a 2024-11-21 - 2024-11-28 1734336 - 1739014 1
    179b 2024-11-28 - 2024-12-05 1739166 - 1743949 1
    180a 2024-12-05 - 2024-12-11 1744101 - 1748427 1
    180b 2024-12-113 - 2024-12-18 1748578 - 1753467 1



    Sector Notes

    Noted Issue Description
    Spacecraft pointing: The pointing in Sector 86 was set at +55.5 degrees in ecliptic latitude. Camera 4 was pointed at the North Ecliptic Pole. Cameras 1 and 4 were used for guiding in Orbits 179b and 180b. Camera 4 was used for guiding in Orbits 179a and 180a. Pointing at the end of the first half orbit (179a) was highly variable, as seen in the delta-quaternion scatter in Figure 1 from TJDs 3641 – 3642.75. During this time, pointing excursions frequently exceeded the 7” threshold adopted by the PDC, TPS, and DV modules, resulting in exclusion of ∼2/3 of the cadences.
    Scattered light: In Sector 86, the Earth introduces scattered light signals towards the beginning of each orbit, and the Moon impacts Cameras 1, 2, and 3 near the middle of Orbit 180b.