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Status](https://coveralls.io/repos/helgee/LegacyEphemeris.jl/badge.svg?branch=master\u0026service=github)](https://coveralls.io/github/helgee/LegacyEphemeris.jl?branch=master)\n\n[![codecov.io](http://codecov.io/github/helgee/LegacyEphemeris.jl/coverage.svg?branch=master)](http://codecov.io/github/helgee/LegacyEphemeris.jl?branch=master)\n\n### Usage\n\n```julia\nusing JPLEphemeris.ASCII\n\n# Download and convert ephemeris DE421\ngetephem(421)\n\n# Load ephemeris DE421\neph = Ephemeris(421)\n\n# 2014-01-01T00:00 in Julian days\njd = 2456658.5\n\n# Position of Mercury w.r.t. the Solar System's barycentre at 2014-01-01T00:00\n# [km]\npos = position(eph, \"mercury\", jd)\n\n# Velocity of Mercury w.r.t. the Solar System's barycentre at 2014-01-01T00:00\n# [km/day]\nvel = velocity(eph, \"mercury\", jd)\n\n# Complete state vector (position and velocity) for a range of Julian days\nst = state(eph, \"mercury\", jd:jd+100)\n\n# The ephemeris also contains the set of constants with which it was calculated\n# e.g. the Astronomical Unit (AU)\nau = eph.constants[\"AU\"]\n\n# Close ephemeris file\nclose(eph)\n```\n\n### Available Celestial Bodies\n\n* Mercury: `\"mercury\"`\n* Venus: `\"venus\"`\n* Earth-Moon system's barycenter: `\"earthmoon\"`\n* Mars: `\"mars\"`\n* Jupiter: `\"jupiter\"`\n* Saturn: `\"saturn\"`\n* Uranus: `\"uranus\"`\n* Neptune: `\"neptune\"`\n* Pluto: `\"pluto\"`\n* Moon (geocentric): `\"moon\"`\n* Sun: `\"sun\"`\n* Librations: `\"librations\"`\n* Nutations: `\"nutations\"`\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fhelgee%2Flegacyephemeris.jl","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fhelgee%2Flegacyephemeris.jl","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fhelgee%2Flegacyephemeris.jl/lists"}