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    "title": "Lunar laser ranging tests equivalence and relativistic orbital effects",
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    "year": 1996,
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        "title": "Relativity parameters determined from lunar laser ranging",
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        "date": "1996-06-15"
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        "title": "Progress in Lunar Laser Ranging Tests of Relativistic Gravity",
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        "date": "2004-11-24"
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        "description": "The two analyses share much of the ranging data and JPL modeling and are not independent experiments. Bounds rely on orbital, tidal, lunar-structure, calibration and parameter-correlation assumptions; separating the strong-equivalence component uses a laboratory composition test, and the 2004 parameter β also uses the Cassini value of γ. The 1996 authors warn that numerical sensitivity to individual post-Newtonian parameters was not fully understood; the 2004 geodetic fit is strongly correlated with lunar-structure parameters. Neither paper invents lunar ranging or Nordtvedt theory. The later first author is recorded in source notes with full name while the earlier source uses initials; full cross-version identity reconciliation is open.",
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          "url": "https://tmurphy.physics.ucsd.edu/apollo/doc/JGW96.pdf"
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      "statement": "# Lunar laser ranging tests equivalence and relativistic orbital effects\n\nLunar laser-ranging analyses by Williams, Newhall and Dickey in 1996 and by Williams, Turyshev and Boggs in 2004 constrained differential Earth–Moon acceleration toward the Sun, geodetic precession and other relativistic parameters. The later work used a longer data span and updated model and reported results consistent with the stated relativistic framework within estimated uncertainties.\n\n## Scientific scope\n\nThe two analyses share much of the ranging data and JPL modeling and are not independent experiments. Bounds rely on orbital, tidal, lunar-structure, calibration and parameter-correlation assumptions; separating the strong-equivalence component uses a laboratory composition test, and the 2004 parameter β also uses the Cassini value of γ. The 1996 authors warn that numerical sensitivity to individual post-Newtonian parameters was not fully understood; the 2004 geodetic fit is strongly correlated with lunar-structure parameters. Neither paper invents lunar ranging or Nordtvedt theory. The later first author is recorded in source notes with full name while the earlier source uses initials; full cross-version identity reconciliation is open.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nJ. G. Williams; X. X. Newhall; J. O. Dickey; Slava G. Turyshev; Dale H. Boggs\n\nThese are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.\n\n\n\n## Original sources\n\n- [Relativity parameters determined from lunar laser ranging](https://tmurphy.physics.ucsd.edu/apollo/doc/JGW96.pdf)\n- [Progress in Lunar Laser Ranging Tests of Relativistic Gravity](https://arxiv.org/pdf/gr-qc/0411113v1)\n",
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      "title": "Lunar laser ranging tests equivalence and relativistic orbital effects"
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    "title": "Lunar laser ranging tests equivalence and relativistic orbital effects",
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