PHANTOM Candidate TIC 242567923: A 5.51336-Day Transit Signal in TESS Photometry

Status: planet candidate. A periodic transit-like signal on TIC 242567923 found by PHANTOM (Planet Hunting Across Noisy TESS Observations and Measurements), an independent search of NASA TESS photometry. It has not been confirmed as a planet: its source star and nature are not yet established by follow-up observations (see Unresolved). Version 1.0 of this record. TIC: 242567923 Star: Tmag 13.98, Teff 3321 K, radius 0.359 ± 0.011 R☉, distance 95.8 pc (TIC v8) Period: 5.5133634 ± 0.0000048 d Mid-transit epoch: BJD_TDB 2459714.66508 ± 0.00079 Depth: 22,676 ± 1,216 ppm Duration: 1.606 ± 0.069 h Radius if on the target: 5.72 +0.24/−0.22 R⊕ (physical fit's Rp/Rs × the TIC stellar radius, both uncertainties); ± 0.4 R⊕ more for the reduction-dependent dilution correction (a joint fit allowing separate radius ratios for the two reductions gives 5.93 and 5.51 R⊕; see *Detailed review*): a working allowance, not a calibrated 68% interval Transits meeting the fit's coverage criterion: 14 in TESS sectors 11, 38, 65, 102 Detection S/N: 26.0 (PHANTOM's search) The full record, with the evidence, uncertainties, data sources, cross-matches, unresolved questions and publication history, is README.md in this deposit.