Separate transit fits in TESS sectors 34, 61, and 88 show a longer second interval of nine orbits for TOI-6695 b
We measure three transit centers of the known planet TOI-6695 b in public TESS two-minute light curves from sectors 34, 61, and 88. The two adjacent spans each contain nine orbits. The later span is longer by 103.8 plus or minus 6.8 minutes under the stated local noise models. The contrast cancels any reference epoch and constant period. Independent fits allow each transit center, shape, and local flux trend to change. Residual shifts, two block lengths, other trends and shapes, raw aperture flux, and a second TESS pipeline test the measurement. The sector 88 center is 2460697.59728 BJD TDB, with an adopted error of 3.26 minutes. This event extends the TESS data used in the 2025 discovery study. In these files, corrected QLP flux retains only 4.5 to 21.1 percent of the central flux loss measured in raw QLP flux with a local baseline. The discovery study had already established transit timing changes and an outer planet. We do not claim a new planet, a new cause, or a lasting increase in orbital period. Three transits cannot establish that trend. The package preserves all six input files, source addresses and hashes, code, fitted samples, resampled times, figures, numerical checks, and offline reproduction instructions.
TOI-6695 b · TIC 118339710 · TESS · transit timing variations · public data · orbital dynamics · reproducible measurement
References
6- usesdoi:10.3847/1538-3881/adc44e
The discovery study established the planets and transit timing changes. It supplies the orbit count and limb darkening coefficients.
- usesdoi:10.1117/12.2233418
The SPOC pipeline produced the primary two-minute TESS light curves.
- usesdoi:10.17909/t9-r086-e880
The QLP data provide a separate processing check on the TESS measurements.
- usesdoi:10.48550/arXiv.2110.05542
This paper describes QLP data in the first extended TESS mission.
- usesdoi:10.48550/arXiv.2211.04387
This paper describes later QLP processing and intermediate data products.
- usesdoi:10.1086/683602
The batman code supplies the finite-exposure transit model.
Cited by
3 publicationsPublic catalog entries on Sciscape.
- supportsFive TESS transits confirm the 49.32 d period of TOI-6663.01 and give P = 49.322543 +- 0.000126 d (79 times more precise than ExoFOP), if one body on a linear ephemeris causes all five events
Our fixed-shape TOI-6695 times give intervals of 723.988 +- 0.003 d and 724.063 +- 0.004 d, so the second interval is longer by about 13 sigma.
- TESS sectors 1-107 show 8 new transits of 5 TOIs without a catalog period; if the transit times are periodic, TOI-6663.01 has 15 possible periods (35-740 d), TOI-2298.01 has 4 and TOI-3724.01 has none
TOI-6695 b transit timing variations. They explain why our linear test rejects all periods for this planet.
- usesTESS sectors 1-107: no constant period of 1 d or more fits the three transits of TOI-3724.01, and its Sector 19 transit (5.6 h) is longer than its Sector 59 and 73 transits (4.5-4.8 h)
We use its result that TOI-6695 b has large timing variations to explain three TOI-6695.01 events by hand (data/manual_explained.csv).