# sgp4

> A NodeJS port of python-sgp4 used for predicting and calculating orbital information of satellites from TLE data.

Latest version **1.0.10** (published 2015-09-26) · 0 weekly downloads

## Install

```sh
npm install sgp4
pnpm add sgp4
yarn add sgp4
bun add sgp4
```

## Health

**Score 15/100 (F)** — status: abandoned.

Positive: no vulnerabilities.

Warnings: low downloads; no types; no esm support.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 1.0.10 |
| Published | 2015-09-26 |
| First published | 2015-03-14 |
| Weekly downloads | 0 |
| TypeScript types | none |
| Module format | CommonJS |
| Dependencies | 1 |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 21 |
| Author | Joshua Ferrara |
| Maintainers | scjosh |
| Keywords | sgp4, node-sgp4, satellite, tle, norad, wgs84, wgs72 |

## Links

- npm: https://www.npmjs.com/package/sgp4
- Repository: https://github.com/joshuaferrara/node-sgp4
- Issues: https://github.com/joshuaferrara/node-sgp4/issues
- npm.io page: https://npm.io/package/sgp4

## Dependencies (1)

- [mocha](https://npm.io/package/mocha.md) ^2.2.5

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## Recent versions

- 1.0.10 (latest) — 2015-09-26
- 1.0.9 — 2015-09-14
- 1.0.7 — 2015-04-04
- 1.0.5 — 2015-03-17
- 1.0.4 — 2015-03-16
- 1.0.3 — 2015-03-16
- 1.0.2 — 2015-03-14
- 1.0.1 — 2015-03-14
- 1.0.0 — 2015-03-14

## README

# node-sgp4

[![Build Status](https://travis-ci.org/joshuaferrara/node-sgp4.svg?branch=master)](https://travis-ci.org/joshuaferrara/node-sgp4)

SGP4 is one of five simplified pertubation models used to calculate various orbital information about satellites. This library was ported from python-sgp4 and uses some functions from satellite-js to convert coordinates.

If you need any support, click the badge below. *Support is not guaranteed and I provide it only when I am not busy.*
[![Join the chat at https://gitter.im/joshuaferrara/node-sgp4](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/joshuaferrara/node-sgp4?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)

[![NPM](https://nodei.co/npm/sgp4.png?downloads=true&stars=true)](https://nodei.co/npm/sgp4/)
### Installation
`npm install sgp4`
### Example | [Google Maps Demo](http://tracking.ferrara.space/)
An example is provided in the top directory named `example.js`. To run the example, simply use the command `node example`. This example program will print the latitude and longitude of the ISS at the current point in time based off of TLE data from 14 September 2015.
### Notes
Most of the methods are self explanatory. The example does a great job of showing how to get different types of coordinates. There are many functions at the bottom of sgp4.js that allow conversion between different coordinate models.
### License
MIT

---
_Source: https://npm.io/package/sgp4 · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._