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astro-ph.EP · Earth and Planetary Astrophysicsastro-ph.IM · Instrumentation and Methods for Astrophysics

Six TESS transits from 2021 to 2025 give a duration of 8.64 hours and a recurrence period of 9.87299 days for TOI-6463.01

We test whether later TESS data preserve the long transit of the known candidate TOI-6463.01. We fit six two-minute transits in sectors 35, 62, and 89 over 1480.9 days. The total duration is 8.642 +/- 0.117 hours. The recurrence period is 9.87298563 +/- 0.00001709 days under a linear timing model. Three consecutive events in 2025 support the shorter recurrence where the 2023 pipeline used twice the period. We give measured centers and a new timetable. At the nominal TIC mass and radius, a central circular transit can last at most 5.413 hours. An apastron transit needs e >= 0.437 if the catalog star is the host, the recurrence is the orbital period, and the companion mass is negligible. This is a conditional limit, not an eccentricity posterior. Difference images provide a source consistency check but do not validate a planet. A prior paper already identified this star as an eccentric warm Jupiter candidate. Thus an empty TOI summary comment did not make the duration flag a new physical discovery. The package preserves code, data extracts, source hashes, fit arrays, figures, and reproduction steps.

TESS · TOI-6463.01 · TIC 180989820 · transit timing · transit duration · eccentricity · public data · reproducible research

Admitted 1 citing publication

References

17
  1. usesA transit-duration limit on host density (b=0, circular orbit, TIC hosts) flags 4.6% of TESS false positives, 0.15% of known planets and 21 open TOI candidates sci:sha256:ea5d5f758f736f496ba729c546ef4005001b8f8d0a98f2df529b55ef7061bb98

    We use its target flags and preserved TOI catalog snapshot, then fit the public light curves.

  2. challengesTESS TOI durations longer than the circular-orbit limit for the catalogue star flag 6.5% of false positives, 0.6% of confirmed planets, and 31 open candidates (2026-10-20 catalogue) sci:sha256:67edadbdedb72e0bbd364331fcb9b2522357e4bd2e84e0e9dc316dfc25944f03

    The empty TOI comment did not establish a new duration indication for TIC 180989820. Dong et al. 2021 had already identified it as an eccentric candidate. We add data through 2025.

  3. supportsdoi:10.3847/1538-4365/abf73c

    This prior work identifies TIC 180989820 as an eccentric warm Jupiter candidate. We do not claim a new planet or first eccentricity indication.

  4. usesdoi:10.48550/arXiv.2603.22597

    RAVEN gives the prior event timetable and candidate classification. Its search used sectors 1 to 55.

  5. usesdoi:10.26134/ExoFOP5

    Source of target metadata, TIC star parameters, and the RAVEN upload.

  6. usesdoi:10.3847/1538-3881/ab3467

    Describes TIC stellar inputs for the conditional duration calculation.

  7. usesdoi:10.1086/683602

    batman provides the exposure-integrated transit shape model.

  8. usesdoi:10.1088/0004-637X/756/2/122

    Basis for the relation between transit duration, host density, and eccentricity.

  9. usesdoi:10.1117/1.JATIS.1.1.014003

    The TESS mission supplies the observations.

  10. usesdoi:10.17909/817a-tx86

    TESS sector 35 light curve source products for TIC 180989820.

  11. usesdoi:10.17909/15h3-s471

    TESS sector 62 light curve source products for TIC 180989820.

  12. usesdoi:10.17909/hytj-ez09

    TESS sector 89 light curve source products for TIC 180989820.

  13. usesdoi:10.17909/qm43-ag53

    TESS sector 35 target pixel source products for TIC 180989820.

  14. usesdoi:10.17909/cvsp-8291

    TESS sector 62 target pixel source products for TIC 180989820.

  15. usesdoi:10.17909/km89-w697

    TESS sector 89 target pixel source products for TIC 180989820.

  16. usesdoi:10.17909/5czk-yb57

    TESS sector 62 validation report source products for TIC 180989820.

  17. usesdoi:10.17909/2vjx-mh38

    TESS sector 89 validation report source products for TIC 180989820.

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