Sector 91



Sector 91 Information

For full data release notes see: DRN125. For a list of TIC IDs with noted issues, see this list.

Sector Summary

  • Sector dates: Apr 09 to May 07 2025
  • Pointing: Ecliptic
  • Days of Science Data Collection: 23.11
  • Days of Paused Data Collection: 0.59



    • Spacecraft Pointing (deg)

    RA dec roll
    Spacecraft 227.04 -16.87 254.27
    Camera 1 192.45 -4.72 337.56
    Camera 2 215.17 -13.3 341.17
    Camera 3 239.32 -19.75 168.14
    Camera 4 264.9 -22.79 177.56



    Orbit Summary

    Orbits Dates (UTC)

    Start - End

    		 Cadence #

    Start - End

    		 Momentum dumps
    189a 2025-04-09 - 2025-04-16 1834438 - 1839499 1
    189b 2025-04-17 - 2025-04-23 1839651 - 1844497 1
    190a 2025-04-23 - 2025-04-30 1844618 - 1849409 1
    190b 2025-04-30 - 2025-05-07 1849561 - 1854217 1

    Sector Notes

    Noted Issue Description
    Loss of Guiding: Data collection was paused during a 3.78-day contingency period, which resulted from a loss of guiding as the Earth passed through one of the satellite’s star-tracker cameras (cadences:1839737 - 1842464)
    Spacecraft pointing: The pointing in Sector 91 was set at 0.7 degrees in ecliptic latitude. The four science cameras were oriented along the Ecliptic Plane. Camera 4 was used for guiding in Orbits 189a, 189b, and 190a. During Orbit 189b, the Earth passed through Camera 4 making pointing unstable at times. Camera 1 was used for guiding in Orbits 189b, 190a, and 190b.
    Scattered light: In Sector 91, the Earth introduces scattered light signals in all Cameras towards the end of orbits 189b and 190b. The Moon impacts all Cameras in orbit 189, and towards the end of orbit 190b.