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    "headline": "JWST Found a 2.8-Jupiter-Mass Planet Inside 50 AU",
    "slug": "jwst-found-a-2-8-jupiter-mass-planet-inside-50-au",
    "dek": "Common proper motion confirmed RX J0534.0-0221 b beside an M dwarf and a resolved debris disk.",
    "summary": "Common proper motion confirmed RX J0534.0-0221 b beside an M dwarf and a resolved debris disk.",
    "body_text": "JWST/NIRCam detected a source at signal-to-noise ratio about 17.5 and a projected separation near 14 astronomical units from the young M dwarf RX J0534.0-0221. A second observation with LBTI/LMIRCam 16 months later favored common proper motion over a background interloper at six to seven sigma. Hot-start models put the object near 2.8 Jupiter masses and 674 kelvin at an age of 18–26 million years. The same system shows a debris disk with a peak-density radius near 79 AU; formation history remains to be determined.",
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    "tags": [
      "exoplanets",
      "JWST",
      "direct imaging"
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      "source_id": "source-2026-09-18-016",
      "title": "arXiv preprint 2609.20748",
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    "title": "JWST Found a 2.8-Jupiter-Mass Planet Inside 50 AU",
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