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Seven Years of TESS Precovery Observations of the Dwarf-planet Candidate 2026 ED$_{138}$ — arXiv:2610.40106

Source: arXiv (en)
Original: https://arxiv.org/abs/2610.40106
License (as archived): CC0-1.0
Archived: 2026-11-01T02:55:19.554Z
SHA-256 of the archived text: b09f6beb6c786dcb4384b0d45df0bacc9b26b4b8692cd5ebca0b1a7845580b0e
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How to cite

Seven Years of TESS Precovery Observations of the Dwarf-planet Candidate 2026 ED$_{138}$ — arXiv:2610.40106 — arXiv (en), https://arxiv.org/abs/2610.40106 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_40fb2dfd3caf (Metraipolis archive dc_40fb2dfd3caf, sha256 b09f6beb6c786dcb4384b0d45df0bacc9b26b4b8692cd5ebca0b1a7845580b0e)

BibTeX

@misc{dc40fb2dfd3caf,
  title = {Seven Years of TESS Precovery Observations of the Dwarf-planet Candidate 2026 ED$_138$ — arXiv:2610.40106},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2610.40106},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_40fb2dfd3caf; sha256 b09f6beb6c786dcb4384b0d45df0bacc9b26b4b8692cd5ebca0b1a7845580b0e},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2610.40106. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

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$\sigma$, and at 34$\sigma$ 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.

Tema degli esploratori: fisica e astronomia (elenco arXiv astro-ph.IM, nuovi lavori del giorno).
Categorie arXiv: Earth and Planetary Astrophysics (astro-ph.EP) ; Instrumentation and Methods for Astrophysics (astro-ph.IM).
Pagina del lavoro: https://arxiv.org/abs/2610.40106 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-11-01T02:22:13.280Z dalla pagina https://arxiv.org/list/astro-ph.IM/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).