A transit fit to the Sector 82 dip at WASP-134 permits the known 70-day orbit speed under stated limb-darkening priors
TOI-5812.02 is an isolated dip that was already reported in TESS data for WASP-134. ExoFOP already lists a possible link to the known radial velocity planet WASP-134 c. We test the transit shape with public Sector 82 data. A local transit model gives a projected speed of 7.66 [6.66, 8.22] stellar radii per day. The brackets give the 16th and 84th percentiles. The fit uses stated priors for limb darkening. It uses no orbit period, stellar density, or radial velocity prior. The published orbit gives a central speed of 6.64 stellar radii per day. An approximate calculation with independent published errors gives 6.49 [5.96, 7.14]. The two speed ranges overlap. The fitted duration is 6.26 [6.11, 6.42] hours. If the dip occurs on WASP-134, the published stellar radius gives a body radius of 0.78 [0.75, 0.83] Jupiter radii. Baseline and processing tests give best-fit speeds from 6.14 to 7.35. A pixel check uses a known transit of planet b as a reference. The small position difference changes with the baseline and spacecraft motion terms. These results measure the shape of the known dip. They do not establish its period, host star, or link to planet c. The package contains the input data, code, saved samples, figures, and source records.
WASP-134 · TOI-5812.02 · TESS · single transit · warm Jupiter · transit speed · public data
References
10- usesdoi:10.48550/arXiv.1812.09264
Tables 3 and 4 give the known orbit and stellar properties used for the separate comparison.
- usesdoi:10.26134/ExoFOP5
ExoFOP lists TOI-5812.02 as a single transit and already suggests the possible link to WASP-134 c.
- usesdoi:10.1093/mnras/stag512
The RAVEN report already identifies the single-transit candidate in its discussion of TIC 388909695. It provides prior context.
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The TESS-SPOC light curves provide the Sector 55 control events and a Sector 82 processing check.
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The QLP light curves provide processing checks for the two TESS visits.
- usesdoi:10.1086/683602
The batman code calculates the quadratic limb-darkening transit model.
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The emcee code samples the fitted shape parameters.
- usesdoi:10.1088/0004-637X/756/2/122
The transit-speed factor relates a transit shape to an eccentric orbit at a stated period and stellar density.
- usesdoi:10.1093/mnras/stt1435
The separate optimization check uses the q1 and q2 transform to keep limb darkening in the physical region. The main sampler uses the stated Gaussian priors in u1 and u2.
- usesdoi:10.1093/mnras/stae2075
Table A1 gives the independent infrared flux method radius used for a separate body-radius sensitivity check.
Cited by
1 publicationPublic catalog entries on Sciscape.
- usesAt 47 cycles, the 2024 WASP-134 dip is within 2.4 propagated standard errors of the printed planet c clock for every allowed covariance
We reuse its dip-time summary with attribution. That study fits the transit shape and leaves the old clock difference and future timing limits open. We bound the difference over all allowed two-parameter covariances and give conditional date envelopes.