Astronomy Packages

sidereus is a javascript library for astronomy and physics calculations

short lunar phase calculator

Calculate phase of the moon using Julian date

Implementation of the Astronomical Algorithms of Jean Meeus in Javascript

This library provides functions to calculate local solar time, also known as local apparent time, based on a given location and date.

A star map with D3.js

A star map with D3.js

A tiny JavaScript library for calculating sun/moon positions and phases.

Astronomical Algorithms in Javascript

React component written in Typescript to embed an Aladin Lite Tool to run in React.

An astronomical HiPS visualizer in the browser

AltAz is a library for performing common astronomy calculations.

Toolkit for solar system ephemerides and satellite propagation via SGP4

A package that formats dates into a fun, astronomy-themed representation.It is a JavaScript package designed to format dates using astronomical themes. It supports various themes such as zodiac signs and lunar phases. The package integrates real lunar cal

Performs astronomical calculations and conversions

Calculate the real-time positions of the sun, all planets and every star/deep-sky object at the sky completely client-side

Render a planetarium at your React website, based on threejs and react-three-fiber.

Calculate the moon phase

A simple API to get data from the JPL and CDMS spectroscopy databases

astronomical coordinate translation library