Skip to content

Commit

Permalink
Update README.md
Browse files Browse the repository at this point in the history
  • Loading branch information
jhermsmeier committed May 29, 2016
1 parent 91c6905 commit 65fbe0e
Showing 1 changed file with 10 additions and 11 deletions.
21 changes: 10 additions & 11 deletions README.md
Original file line number Diff line number Diff line change
@@ -1,7 +1,10 @@
Two-line element set (TLE)
==========================
[![build status](https://secure.travis-ci.org/jhermsmeier/node-tle.png)](http://travis-ci.org/jhermsmeier/node-tle)
[![NPM version](https://badge.fury.io/js/tle.png)](https://npmjs.org/tle)
# Two-line element set (TLE)
[![npm](https://img.shields.io/npm/v/tle.svg?style=flat-square)](https://npmjs.com/tle)
[![npm license](https://img.shields.io/npm/l/tle.svg?style=flat-square)](https://npmjs.com/tle)
[![npm downloads](https://img.shields.io/npm/dm/tle.svg?style=flat-square)](https://npmjs.com/tle)
[![build status](https://img.shields.io/travis/jhermsmeier/node-tle.svg?style=flat-square)](https://travis-ci.org/jhermsmeier/node-tle)

Two-line element set (TLE) data format parser

A two-line element set ([TLE]) is a data format used to convey sets of orbital elements that describe the orbits of Earth-orbiting satellites. A computer program called a model can use the TLE to compute the position of a satellite at a particular time. The TLE is a format specified by NORAD and used by [NORAD] and [NASA]. The TLE can be used directly by the [SGP4] model (or one of the SGP8, [SDP4], SDP8 models). Orbital elements are determined for many thousands of space objects by NORAD and are freely distributed on the Internet in the form of TLEs. A TLE consists of a title line followed by two lines of formatted text.

Expand All @@ -13,20 +16,16 @@ A two-line element set ([TLE]) is a data format used to convey sets of orbital e
[SGP4]: http://en.wikipedia.org/wiki/SGP4
[SDP4]: http://en.wikipedia.org/wiki/SDP4

## Install via [npm](https://npmjs.com/package/tle)

Install via [npm](https://npmjs.org)
------------------------------------
```sh
$ npm install tle
$ npm install --save tle
```

Format
------
## Format

**More, detailed information is available at [NASA Human Space Flight](http://spaceflight.nasa.gov/realdata/sightings/SSapplications/Post/JavaSSOP/SSOP_Help/tle_def.html):**

[![TLE](http://spaceflight.nasa.gov/realdata/sightings/SSapplications/Post/JavaSSOP/SSOP_Help/2line.gif)](http://spaceflight.nasa.gov/realdata/sightings/SSapplications/Post/JavaSSOP/SSOP_Help/tle_def.html)

> From [NASA Human Space Flight](http://spaceflight.nasa.gov/realdata/sightings/SSapplications/Post/JavaSSOP/SSOP_Help/tle_def.html)
Some data to play around with can be found at [Celestrak](http://www.celestrak.com/NORAD/elements/master.asp).

0 comments on commit 65fbe0e

Please sign in to comment.