https://github.com/cadojo/astrodynamicalcalculations.jl

Common calculations within orbital mechanics and astrodynamics.
https://github.com/cadojo/astrodynamicalcalculations.jl

Last synced: 12 days ago
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Common calculations within orbital mechanics and astrodynamics.

• Host: GitHub
• URL: https://github.com/cadojo/astrodynamicalcalculations.jl
• Owner: cadojo
• License: mit
• Archived: true
• Created: 2023-08-31T02:48:39.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2024-10-06T15:56:15.000Z (8 months ago)
• Last Synced: 2025-03-06T08:58:03.701Z (3 months ago)
• Language: Julia
• Size: 271 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
> [!IMPORTANT]

> This project has been **moved** to [`JuliaAstro/EphemerisSources.jl`](https://github.com/JuliaAstro/EphemerisSources.jl).

> The package name and UUID have not changed. 

[![Tests](https://github.com/cadojo/AstrodynamicalCalculations.jl/workflows/Tests/badge.svg)](https://github.com/cadojo/AstrodynamicalCalculations.jl/actions?query=workflow%3ATests)

[![Docs](https://github.com/cadojo/AstrodynamicalCalculations.jl/workflows/Documentation/badge.svg)](https://cadojo.github.io/AstrodynamicalCalculations.jl)

# `AstrodynamicalCalculations.jl`

_Common calculations relating to orbital mechanics and astrodynamics._

## Installation

```julia

pkg> add AstrodynamicalCalculations

```

## Overview

Almost all of the equations used in your (my) first-year graduate astrodynamics coursework,

in Julia! This package includes equations which are valid within the Restricted Two Body

Problem (R2BP), and the Circular Restricted Three Body Problem (CR3BP). Each function's

docstring clearly labels the models in which the underlying equations are valid. Iterative

solvers, including Kepler's prediction algorithm, and the universal Lambert solver, are 

also provided. 

Two newer Lambert solver implementations (Lancaster / Blanchard, and 

Oldenhuis) are also provided, but they are currently not working. Something seems to have

not transferred well while porting the code from MATLAB to Julia. I hope to work on this 

more in 2024.

## Getting Stated

Please refer to the [documentation](https://cadojo.github.io/AstrodynamicalCalculations.jl) 

for more detailed instructions, and usage examples. 

```julia

julia> r = [0.0, 11681.0, 0.0];     # km

julia> v = [5.134, 4.226, 2.787];   # km/s

julia> μ = 398600.4354360959;       # km³ s⁻²

julia> e, a, i, Ω, ω, ν = cartesian_to_keplerian(r, v, μ) 

(0.723452708202361, 24509.265399338536, 2.6442542356744734, 1.5707963267948966, 4.712449617676915, 1.5707356895026707)

julia> T = orbital_period(a, μ) 

38186.19850882009

julia> rₙ, vₙ = kepler(r, v, μ, 2.5T)

([36872.96963754877, -2574.241491333036, 20016.549742861007], [-0.3141726028666592, -1.6044679459972122, -0.17054909314167882])

```