PHANTOM Candidate TIC 219775604: A 2.11915-Day Transit Signal in TESS Photometry

Status: planet candidate. A periodic transit-like signal on TIC 219775604 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: 219775604 Star: Tmag 13.57, Teff 4659 K, radius 0.824 ± 0.048 R☉, distance 383.3 pc (TIC v8; the radius's error from analysis__stellar_4564_2026-10-28.json, the TIC giving none) Period: 2.11915453 ± 0.0000009 d Mid-transit epoch: BJD_TDB 2459782.06102 ± 0.00023 Depth: 11,896 ± 151 ppm Duration: 1.693 ± 0.021 h Radius if on the target: 9.44 +0.58/−0.60 R⊕ (physical fit's Rp/Rs × the TIC stellar radius, both uncertainties); the stellar radius's error from Stefan-Boltzmann (the TIC's temperature and luminosity, the luminosity's error assumed to be 5%) and Gaia DR3's FLAME radius, 4% smaller (analysis__stellar_4564 files); with the star's density as a prior, 9.7 ± 0.6 Transits meeting the fit's coverage criterion: 407 in TESS sectors 14, 15, 16, 17, 19, 20, 22, 23, 24, 25, 26, 40, 41, 47, 48, 49, 50, 52, 53, 54, 55, 56, 57, 58, 59, 60, 73, 74, 75, 76, 77, 79, 80, 81, 82, 83, 84, 85, 86 Detection S/N: 138.6 (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.