JPL Moshier Ephemeris
Open MIT-licensed ephemeris engine in C
JPL Moshier Ephemeris launched on May 25, 2026 with 3 votes, #3,449 of 20,538 launches that month and more than 50% of that year's launches.
What it does
Independent C ephemeris engine with JPL/CALCEPH, Moshier, VSOP87, ELP2000, Meeus, eclipse, and astrology/astronomy APIs. - jayeshmepani/jpl-ephemeris
Independent C ephemeris engine using JPL kernels through CALCEPH as the primary backend and independently verified Moshier-derived/public-domain algorithms as secondary components where appropriate. This library is developed and owned by Jayesh Mepani. It provides an independently implemented JPL/Moshier/VSOP+ELP+Meeus engine and a project-owned API surface. This repository now contains a substantial implemented ephemeris engine, but it is still not exact across every domain. No public calculation function may return approximate production output. A function is either exact for its documented contract or it returns JME_ERR with a clear error message. Read docs/POLICIES_AND_NOTICES.md ,…from github.com
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