{
  "abstract": "The trans-Neptunian object 2026 ED$_{138}$ was announced in 2026 October as the first dwarf-planet candidate in our solar system discovered by the Vera C. Rubin Observatory. The Transiting Exoplanet Survey Satellite (TESS) observed it in five month-long sectors between 2019 and 2026, four of them before its discovery. We subtract every Gaia DR3 star from these crowded full-frame images with the TESS-Gaia Light Curve (TGLC) package, then remove static residuals with a running median. Stacking the images along its predicted path detects 2026 ED$_{138}$ in all five sectors at 5-21$σ$, and at 34$σ$ combined. The TESS positions alone confirm the JPL orbit, and its brightness is consistent with the 0.08 mag fading expected from its increasing distance and changing phase angle.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.40106",
  "author_total": 5,
  "authors": [
    {
      "name": "Te Han"
    },
    {
      "name": "Jeroen Audenaert"
    },
    {
      "name": "Daniel Muthukrishna"
    },
    {
      "name": "Matthew Holman"
    },
    {
      "name": "George R. Ricker"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/205z9s36dmmhj.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.40106",
  "fulltext_url": null,
  "id": "205z9s36dmmhj",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.40106",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.EP"
    ],
    [
      "arxiv",
      "astro-ph.IM"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.40106",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/205z9s36dmmhj.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:28Z",
      "native_id": "2610.40106",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.40106"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.IM",
      "subfield": "instrumentation-methods"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.EP",
      "subfield": "planetary"
    }
  ],
  "title": "Seven Years of TESS Precovery Observations of the Dwarf-planet Candidate 2026 ED$_{138}$",
  "title_text": "Seven Years of TESS Precovery Observations of the Dwarf-planet Candidate 2026 ED_138",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:47Z",
  "url": "https://research.draconitic.com/paper/205z9s36dmmhj",
  "venue": "arXiv",
  "versions": []
}