npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

sgp4

v1.0.10

Published

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

Downloads

101

Readme

node-sgp4

Build Status

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

NPM

Installation

npm install sgp4

Example | Google Maps Demo

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