https://github.com/helgee/legacyephemeris.jl

Legacy ASCII API of JPLEphemeris.jl
https://github.com/helgee/legacyephemeris.jl

Last synced: 5 months ago
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Legacy ASCII API of JPLEphemeris.jl

• Host: GitHub
• URL: https://github.com/helgee/legacyephemeris.jl
• Owner: helgee
• License: other
• Created: 2016-08-15T10:55:20.000Z (almost 10 years ago)
• Default Branch: master
• Last Pushed: 2016-08-15T13:39:58.000Z (almost 10 years ago)
• Last Synced: 2025-11-30T03:50:33.439Z (8 months ago)
• Language: Julia
• Size: 6.84 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

          
# LegacyEphemeris

[![Build Status](https://travis-ci.org/helgee/LegacyEphemeris.jl.svg?branch=master)](https://travis-ci.org/helgee/LegacyEphemeris.jl)

[![Coverage Status](https://coveralls.io/repos/helgee/LegacyEphemeris.jl/badge.svg?branch=master&service=github)](https://coveralls.io/github/helgee/LegacyEphemeris.jl?branch=master)

[![codecov.io](http://codecov.io/github/helgee/LegacyEphemeris.jl/coverage.svg?branch=master)](http://codecov.io/github/helgee/LegacyEphemeris.jl?branch=master)

### Usage

```julia

using JPLEphemeris.ASCII

# Download and convert ephemeris DE421

getephem(421)

# Load ephemeris DE421

eph = Ephemeris(421)

# 2014-01-01T00:00 in Julian days

jd = 2456658.5

# Position of Mercury w.r.t. the Solar System's barycentre at 2014-01-01T00:00

# [km]

pos = position(eph, "mercury", jd)

# Velocity of Mercury w.r.t. the Solar System's barycentre at 2014-01-01T00:00

# [km/day]

vel = velocity(eph, "mercury", jd)

# Complete state vector (position and velocity) for a range of Julian days

st = state(eph, "mercury", jd:jd+100)

# The ephemeris also contains the set of constants with which it was calculated

# e.g. the Astronomical Unit (AU)

au = eph.constants["AU"]

# Close ephemeris file

close(eph)

```

### Available Celestial Bodies

* Mercury: `"mercury"`

* Venus: `"venus"`

* Earth-Moon system's barycenter: `"earthmoon"`

* Mars: `"mars"`

* Jupiter: `"jupiter"`

* Saturn: `"saturn"`

* Uranus: `"uranus"`

* Neptune: `"neptune"`

* Pluto: `"pluto"`

* Moon (geocentric): `"moon"`

* Sun: `"sun"`

* Librations: `"librations"`

* Nutations: `"nutations"`