Show HN: Where is the ISS? Live 3D tracker

Category: library

Tags: satellite-tracking, sgp4, typescript-library

Score: 7.0/10 (Innovation: 5, Technical: 8, Documentation: 8, Utility: 7)

Satellite.js is a TypeScript library for satellite propagation using TLE or OMM data, implementing SGP4/SDP4 algorithms with coordinate transforms and Doppler calculations. Its port of a proven astrodynamics algorithm to JavaScript fills a niche need for satellite tracking in web applications, demonstrated by a live ISS tracker demo and over 1000 GitHub stars.

Target audience: backend devs, data engineers, aerospace enthusiasts

Repository: https://psand.net/where-is-the-iss/ · TypeScript · MIT · 1048 stars

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