A two-line element set (TLE) is a data format encoding a list of orbital elements of an Earth-orbiting object for a given point in time
TLEs can be found for all unclassified earth obiiting objects at https://www.space-track.org/
Space track has a REST api at: https://www.space-track.org/{basicspacedata}/{query}/{class}/{boxscore}/
Node package satellite.js lets us calculate the lat lon and altitude at any point in time.
The data manipulation comes from the lineOfSight app. By passing a TLE pair into getOrbitFeatures it produces a nice valid geoJSON object
const sat = {
tleLine1: '1 38709U 12039C 18176.45092306 -.00000027 00000-0 89675-5 0 9994', // from spacetrack.org
tleLine2: '2 38709 99.1344 171.7433 0009800 265.5409 94.4650 14.23967048307959',
name: 'EXACTVIEW-1',
norad_id: '38709',
};
const orbit = getOrbitFeatures(sat, []);
// => orbit
/*
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"type": "---",
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}
}
]
*/
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