{
  "abstract": "We report the discovery and validation of TIC 88297141 Ab, a transiting planet orbiting a pre-main-sequence M dwarf (0.31 solar masses, 0.74 solar radii) in the Scorpius-Centaurus OB association. Group membership implies an age of $15.6 \\pm 1.6$ Myr, supported by lithium and isochrone age-dating. We detected the TESS transits using a custom pipeline designed for variable stars and used ground-based photometry (LCO/Swope and LCOGT/Sinistro) to confirm the on-target nature of the signal. Our global fit of the transits and stellar activity gives an orbital period of 4.64 days and a planet radius of $7.21 \\pm 0.32$ Earth radii (0.64 Jupiter radii). The star has a comoving M-dwarf companion (0.4 solar radii) at a projected separation of $260$ au; speckle imaging (Gemini-S/Zorro) reveals no additional stellar companions, and radial velocities from Magellan/PFS are consistent with stellar activity, giving $M_p \\sin i < 4.7$ Jupiter masses at $2σ$. A statistical validation analysis yields a false positive probability of $10^{-5}$, validating the planet. A mass measurement will determine whether TIC 88297141 Ab is a low-density super-puff, like other comparably sized planets at these ages, or an unusually massive planet for its radius.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.38315",
  "author_total": 28,
  "authors": [
    {
      "name": "Gurmeher Kathuria"
    },
    {
      "name": "Luke G. Bouma"
    },
    {
      "name": "Andrew W. Boyle"
    },
    {
      "name": "Roberto Tejada Arevalo"
    },
    {
      "name": "Andrew W. Mann"
    },
    {
      "name": "Nidia Morrell"
    },
    {
      "name": "Karen A. Collins"
    },
    {
      "name": "R. Paul Butler"
    },
    {
      "name": "Stephen A. Shectman"
    },
    {
      "name": "Johanna Teske"
    },
    {
      "name": "Jeffrey D. Crane"
    },
    {
      "name": "Shreyas Vissapragada"
    },
    {
      "name": "Madeleine Mckenzie"
    },
    {
      "name": "Khalid Barkaoui"
    },
    {
      "name": "Norio Narita"
    },
    {
      "name": "Akihiko Fukui"
    },
    {
      "name": "Jerome P. De Leon"
    },
    {
      "name": "Toshi Suganuma"
    },
    {
      "name": "Madyson G. Barber"
    },
    {
      "name": "Francis P. Wilkin"
    },
    {
      "name": "Victoria Zaledonis"
    },
    {
      "name": "Sophia Garcia-Gallet"
    },
    {
      "name": "Glauk Hizmo"
    },
    {
      "name": "Steve B. Howell"
    },
    {
      "name": "David R. Ciardi"
    },
    {
      "name": "Colin Littlefield"
    },
    {
      "name": "Sarah Deveny"
    },
    {
      "name": "Douglas A. Caldwell"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5cd1997xaypra.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.38315",
  "fulltext_url": null,
  "id": "5cd1997xaypra",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.38315",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.EP"
    ],
    [
      "openalex",
      "3103|Stellar, planetary, and galactic studies"
    ]
  ],
  "openalex": "W7215082178",
  "pdf_url": "https://arxiv.org/pdf/2609.38315",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5cd1997xaypra.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:48Z",
      "native_id": "2609.38315",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.38315"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.EP",
      "subfield": "planetary"
    }
  ],
  "title": "An Infant Sub-Saturn in Scorpius-Centaurus",
  "title_text": "An Infant Sub-Saturn in Scorpius-Centaurus",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:48Z",
  "url": "https://research.draconitic.com/paper/5cd1997xaypra",
  "venue": "arXiv",
  "versions": []
}