lunar-laser-ranging

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mhawarey / lunar-laser-ranging-analyzer

A desktop Tkinter analysis tool for **Lunar Laser Ranging (LLR)** normal-point data. Fits the secular Earth–Moon recession (3.82 cm/yr), removes geometric variations (synodic + 18.6-year nodal), and derives a residual-RMS-based bound on the gravitational **Equivalence Principle** parameter |Δa/a| — currently 3 × 10⁻¹⁴ from APOLLO-era data.

lunar llr laser-ranging laser-ranging-software lunar-laser-ranging

Updated May 19, 2026
Python

matthewsmawfield / TEP-LLR

Star

Temporal Equivalence Principle: Lunar Laser Ranging and the Nordtvedt Effect — Lunar laser ranging constraints on the Nordtvedt effect and temporal shear in the Earth-Moon system, with 50+ year dataset analysis.

gravitation tep modified-gravity scalar-tensor-gravity post-newtonian equivalence-principle temporal-equivalence-principle lunar-laser-ranging nordtvedt-effect strong-equivalence-principle

Updated Aug 6, 2026
Python

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