All 3,610 released allesfitter eclipse times for 152 TESS binaries fit linear clocks within 0.45 milliseconds
We test released eclipse times from Esmer and Daylan (2025), AJ 170, 322. Separate linear clocks fit all 3,610 allesfitter times for 152 TESS binaries within 0.45 milliseconds. Exact rational certificates prove the bound for every listed time and supplied cycle. Original journal data rows and the CDS copy are identical. For TIC 142979644, the 44 allesfitter times have a residual RMS of 0.240 milliseconds. The paper reports a 19.8-second timing amplitude. The other timing method retains primary eclipse variations. We hold the sine period at the published 534.96 days. Adding this sine to the clock improves predictions in four of five omitted observing groups. Both flux products give this result. Secondary eclipse scores are worse overall. These are stability tests because the period was chosen from the same observations. The main result concerns the released table. It does not set a physical limit on timing changes. It does not confirm or reject a companion. The package contains frozen inputs, source hashes, code, exact certificates, figures, and instructions for reproduction.
eclipse timing · TESS · circumbinary companions · TIC 142979644 · data validation · exact arithmetic · linear ephemeris · reproducibility
References
2- challengesdoi:10.3847/1538-3881/ae0f9e
We use its released Tables 3 to 5. All released allesfitter time values fit linear clocks within 0.45 milliseconds. After clock removal, this table cannot reproduce the reported second-scale variations. The result does not reject physical variations or a companion.
- doi:10.1088/0004-637X/774/1/81
This contact-binary study shows that changes in eclipse shape can produce timing variations. We cite it as context for eclipse-type checks. We do not apply its starspot model to the detached target.
Cited by
2 publicationsPublic catalog entries on Sciscape.
- usesNo fixed period fits 14 published TOI-4504 c transit times within 48 hours
We use its exact pairwise slope-interval method for a separate check. Our code is written independently.
- usesSymmetric fits to 86 TESS eclipses give a 16.6-second differential timing wave for TIC 142979644 at 534.96 days
This verified study motivates direct flux timing after its audit of the released allesfitter clocks. We reuse its frozen copy and provenance for the CDS generalized-Gaussian table and its approximate binary clock for window selection. Our eclipse centers are new fits to original TESS flux.