Two-line Element Set (TLE) parser library

npm install tle-parser

As a ES2015+ module

import parser from 'tle-parser'

As a CommonJS module (≤ES5)

var parser = require('tle-parser').parser

Parses a TLE and returns a human readable object of the orbital elements. (Two and three line TLEs are supported)

Parameters

• tle string The TLE as a string (with line breaks etc.)

Returns Elements Object containing the TLEs orbital elements.

Examples

import parser from 'tle-parser'
const tle = `0 ISS (ZARYA)
1 25544U 98067A   15310.90801927  .00009031  00000-0  13975-3 0  9997
2 25544  51.6440  91.7795 0006748 114.3849  28.9641 15.54854844970245`
const elements = parser(tle)

Properties

• name string Name of the object
• intl_designator string International Designator (YYYY-NNNAAA)
• catalog_number string Satellite Catalog Number (NNNNN)
• classification_type string Classification Type
• epoch string Epoch as an ISO8601/RFC3339 style date
• inclination number Inclination [degrees]
• eccentricity number Eccentricity
• right_ascension number Right Ascension of the Ascending Node [degrees]
• argument_of_periapsis number Argument of Perigee [degrees]
• mean_anomaly number Mean Anomaly [degrees]
• mean_motion number Mean Motion [revolutions * day^-1]
• mean_motion_dot number First time derivative of the Mean Motion (already multiplied by 2) [revolutions * day^-2]
• mean_motion_dot_dot number Second time derivative of the Mean Motion (already multiplied by 6) [revolutions * day^-3]
• b_star number B* drag term [earthRadii^-1]
• revolutions_at_epoch number Revolution Number at Epoch
• element_set_number number Element Set Number
• ephemeris_type number Element Set Type

npm install -g tle-parser
tle2json -o elements.json file-with.tle