https://github.com/sciml/nbodysimulator.jl

A differentiable simulator for scientific machine learning (SciML) with N-body problems, including astrophysical and molecular dynamics
https://github.com/sciml/nbodysimulator.jl

algorithmic-differentiation automatic-differentiation differentiable-programming geometric-algorithms molecular-dynamics molecular-dynamics-simulation scientific-machine-learning sciml symbolic-integration

Last synced: 4 months ago
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A differentiable simulator for scientific machine learning (SciML) with N-body problems, including astrophysical and molecular dynamics

• Host: GitHub
• URL: https://github.com/sciml/nbodysimulator.jl
• Owner: SciML
• License: other
• Created: 2018-07-24T14:54:52.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2025-08-12T05:39:16.000Z (6 months ago)
• Last Synced: 2025-10-21T12:36:03.754Z (4 months ago)
• Topics: algorithmic-differentiation, automatic-differentiation, differentiable-programming, geometric-algorithms, molecular-dynamics, molecular-dynamics-simulation, scientific-machine-learning, sciml, symbolic-integration
• Language: Julia
• Homepage: https://docs.sciml.ai/NBodySimulator/stable/
• Size: 621 KB
• Stars: 137
• Watchers: 7
• Forks: 19
• Open Issues: 14
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md
  • Citation: CITATION.bib

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README

          
# NBodySimulator

[![Join the chat at https://julialang.zulipchat.com #sciml-bridged](https://img.shields.io/static/v1?label=Zulip&message=chat&color=9558b2&labelColor=389826)](https://julialang.zulipchat.com/#narrow/stream/279055-sciml-bridged)

[![Global Docs](https://img.shields.io/badge/docs-SciML-blue.svg)](https://docs.sciml.ai/NBodySimulator/stable/)

[![codecov](https://codecov.io/gh/SciML/NBodySimulator.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/SciML/NBodySimulator.jl)

[![Build Status](https://github.com/SciML/NBodySimulator.jl/workflows/CI/badge.svg)](https://github.com/SciML/NBodySimulator.jl/actions?query=workflow%3ACI)

[![ColPrac: Contributor's Guide on Collaborative Practices for Community Packages](https://img.shields.io/badge/ColPrac-Contributor%27s%20Guide-blueviolet)](https://github.com/SciML/ColPrac)

[![SciML Code Style](https://img.shields.io/static/v1?label=code%20style&message=SciML&color=9558b2&labelColor=389826)](https://github.com/SciML/SciMLStyle)

Simulating systems of N interacting bodies.

## Tutorials and Documentation

For information on using the package,

[see the stable documentation](https://docs.sciml.ai/NBodySimulator/stable/). Use the

[in-development documentation](https://docs.sciml.ai/NBodySimulator/dev/) for the version of

the documentation, which contains the unreleased features.

## Example

```julia

using NBodySimulator

using StaticArrays

using Plots

body1 = MassBody(SVector(0.0, 1.0, 0.0), SVector(5.775e-6, 0.0, 0.0), 2.0)

body2 = MassBody(SVector(0.0, -1.0, 0.0), SVector(-5.775e-6, 0.0, 0.0), 2.0)

G = 6.673e-11

system = GravitationalSystem([body1, body2], G)

tspan = (0.0, 1111150.0)

simulation = NBodySimulation(system, tspan)

sim_result = run_simulation(simulation)

animate(sim_result, "path_to_animated_particles.gif")

```