Sector 77



Sector 77 Information

For full data release notes see: DRN108. For a list of TIC IDs with noted issues, see this list.

Sector Summary

  • Sector dates: March 25 2024 to April 23 2024
  • Pointing: Northern hemisphere
  • Days of Science Data Collection: 17.92
  • Days of Paused Data Collection: 10.15



    • Spacecraft Pointing (deg)

    RA dec roll
    Spacecraft 255.86 63.86 302.34
    Camera 1 218.0 35.99 62.6
    Camera 2 237.55 56.0 48.26
    Camera 3 283.8 67.98 186.73
    Camera 4 337.36 59.86 137.85



    Orbit Summary

    Orbits Dates (UTC)

    Start - End

    		 Cadence #

    Start - End

    		 Momentum dumps
    161a 2024-03-25 - 2024-04-01 1560979 - 1565910 1
    161b 2024-04-02 - 2024-04-06 1566061 - 1569420 1
    162b 2024-04-16 - 2024-04-23 1576576 - 1581187 1



    Sector Notes

    Noted Issue Description
    Safe Hold: Sector 77 observations were truncated on April 6 because the on-board data recorder filled up due to a missed downlink on April 1. Observations did not resume until April 16 because the spacecraft was in Safe Hold mode. A total of 10.022 days of observations were lost due to these two events. No data are taken in Spacecraft Safe Hold mode, which is a configuration that prioritizes the safety of the spacecraft and instrument in response to anomalies. The temperatures of the cameras change slightly during safe holds, and users may find small shifts (≤ 0.5 pixels) in the images for about 2 days after data collection resumes after a safe hold. These shifts are incorporated into the World Coordinate Solutions. Data collection was paused for a total of 10.15 days due to on-board data recorder fill, Safe Hold mode, and data downloads. In total, there are 17.92 days of science data collected in Sector 77.
    Spacecraft pointing: The pointing in Sector 77 was set at +83.5 degrees in ecliptic latitude so that Camera 3 points near the North Ecliptic Pole. Camera 4 was used for guiding in both orbits.
    Scattered light: In Sector 77, the Earth introduces scattered light signals at the end of Orbit 161a, the beginning of 161b, and the beginning of 162b, The Moon impacts Camera 1 near the end of of Orbit 161a and the middle of Orbit 162b.