{
  "abstract": "We investigate the presence of a Yukawa-like correction ($\\propto \\, αe^{- r/λ}$) to Newtonian gravity at the Galactic Center, using a multi-star fitting code, including the newly discovered star S$301$, to improve the constraints obtained using S$2$ orbit alone. We perform a Markov Chain Monte Carlo analysis using the astrometric and spectroscopic data of stars S$2$, S$55$, S$29$, S$38$ and S$301$ collected by GRAVITY, GRAVITY$^+$, NACO and SINFONI instruments, covering the period from $1992$ to $2025$. Compared to GRAVITY Collaboration 2025 (Paper I), in which only S$2$ was fitted, the tightest bound on the Yukawa coupling is again reached at $λ= 3\\cdot10^{13}\\,\\rm m\\ (\\sim 200\\,AU)$, where we find $|α| < 6 \\cdot10^{-4}$, an improvement of roughly a factor five. The addition of S$301$ extends the constraint to short ranges that were inaccessible to S$2$, yielding $|α| < 0.004$ at $λ=10^{12}\\,\\rm m$ and $|α| < 0.006$ at $λ=5\\cdot 10^{11}\\,\\rm m$, while S$29$, with its larger apoapsis, gives $|α| < 0.1$ at $λ\\sim 2\\cdot10^{15}\\,\\rm m$. The latter two represent the tightest limits at these scale lengths on a Yukawa correction obtained to date around a supermassive black hole.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.07693",
  "author_total": 79,
  "authors": [
    {
      "name": "A Foschi"
    },
    {
      "name": "K Abd El Dayem"
    },
    {
      "name": "N Aimar"
    },
    {
      "name": "A Berdeu"
    },
    {
      "name": "J.-P Berger"
    },
    {
      "name": "G Bourdarot"
    },
    {
      "name": "W Brandner"
    },
    {
      "name": "Y Cao"
    },
    {
      "name": "C Correia"
    },
    {
      "name": "S. Cueves Cardona"
    },
    {
      "name": "R Davies"
    },
    {
      "name": "D Defrère"
    },
    {
      "name": "F Delplancke-Ströbele"
    },
    {
      "name": "A Drescher"
    },
    {
      "name": "F Eisenhauer"
    },
    {
      "name": "L. Esteras Otal"
    },
    {
      "name": "M Fabricius"
    },
    {
      "name": "H Feuchtgruber"
    },
    {
      "name": "S Flesch"
    },
    {
      "name": "N.M. Förster Schreiber"
    },
    {
      "name": "Q Fournier"
    },
    {
      "name": "P Garcia"
    },
    {
      "name": "R. Garcia Lopez"
    },
    {
      "name": "R Genzel"
    },
    {
      "name": "S Gillessen"
    },
    {
      "name": "F Gonté"
    },
    {
      "name": "X Haubois"
    },
    {
      "name": "S.F Hönig"
    },
    {
      "name": "M Houllé"
    },
    {
      "name": "S Joharle"
    },
    {
      "name": "J Kammerer"
    },
    {
      "name": "A Kaufer"
    },
    {
      "name": "P Kervella"
    },
    {
      "name": "L Kreidberg"
    },
    {
      "name": "L Labadie"
    },
    {
      "name": "S Lacour"
    },
    {
      "name": "O Lai"
    },
    {
      "name": "R Laugier"
    },
    {
      "name": "J.-B Le Bouquin"
    },
    {
      "name": "J Leftley"
    },
    {
      "name": "R Li"
    },
    {
      "name": "B Lopez"
    },
    {
      "name": "D Lutz"
    },
    {
      "name": "F Mang"
    },
    {
      "name": "A Mérand"
    },
    {
      "name": "F Millour"
    },
    {
      "name": "M Montargès"
    },
    {
      "name": "N Morujão"
    },
    {
      "name": "H Nowacki"
    },
    {
      "name": "M Nowak"
    },
    {
      "name": "J Osorno"
    },
    {
      "name": "T Ott"
    },
    {
      "name": "S Pappert"
    },
    {
      "name": "C Paladini"
    },
    {
      "name": "T Paumard"
    },
    {
      "name": "K Perraut"
    },
    {
      "name": "G Perrin"
    },
    {
      "name": "R Petrov"
    },
    {
      "name": "N Pourré"
    },
    {
      "name": "S Rabien"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/788gqa5bh8144.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.07693",
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  "id": "788gqa5bh8144",
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  "landing_url": "https://hal.science/hal-05761038v1",
  "language": "en",
  "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",
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      "openalex",
      "3103|Stellar, planetary, and galactic studies"
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  "openalex": "W7212010424",
  "pdf_url": "https://arxiv.org/pdf/2609.07693",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-09",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/788gqa5bh8144.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:39Z",
      "native_id": "hal-05761038",
      "source": "hal",
      "url": "https://hal.science/hal-05761038v1"
    },
    {
      "first_seen": "2026-10-30T12:20:12Z",
      "native_id": "2609.07693",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.07693"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Improving constraints on the Yukawa correction at the Galactic Center with multiple stellar orbits",
  "title_text": "Improving constraints on the Yukawa correction at the Galactic Center with multiple stellar orbits",
  "type": "preprint",
  "updated_at": "2026-10-30T12:20:12Z",
  "url": "https://research.draconitic.com/paper/788gqa5bh8144",
  "venue": "HAL",
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}