added the TLE reference tables from wikipedia to the readme

1 files changed, 46 insertions, 3 deletions

diff --git a/README.md b/README.md
index 0c95ee8..58871ab 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,50 @@
 [![GoDoc](https://godoc.org/git.darknebu.la/Satellite/TLE?status.svg)](https://godoc.org/git.darknebu.la/Satellite/TLE) [![Go Report Card](https://goreportcard.com/badge/git.darknebu.la/Satellite/TLE)](https://goreportcard.com/report/git.darknebu.la/Satellite/TLE) [![Build Status](https://drone.nbg1.emile.space/api/badges/Satellite/TLE/status.svg)](https://drone.nbg1.emile.space/Satellite/TLE)
 # TLE
 
-Implementing the "Two-line element set (TLE)", a data format encoding orbital elements of Earth-orbiting objects. https://en.wikipedia.org/wiki/Two-line_element_set

+Implementing the "Two-line element set (TLE)", a data format encoding orbital elements of Earth-orbiting objects. https://en.wikipedia.org/wiki/Two-line_element_set
 
-[nasa documentation of the
-format](https://spaceflight.nasa.gov/realdata/sightings/SSapplications/Post/JavaSSOP/SSOP_Help/tle_def.html)
+[nasa documentation of the format](https://spaceflight.nasa.gov/realdata/sightings/SSapplications/Post/JavaSSOP/SSOP_Help/tle_def.html)
+
+## Format
+
+(the below tables are copied 1:1 from wikipedia ([from here](https://en.wikipedia.org/wiki/Two-line_element_set)))
+
+### Title line
+
+| Field | Columns | Content | Example |
+| ----- | ------- | ------- | ------- |
+| 1 | 01-24 | Satellite name | ISS (ZARYA) |
+
+### Line one
+
+| Field | Columns | Content | Example |
+| ----- | ------- | ------- | ------- |
+| 1  | 01-01 | Line number | 1 |
+| 2  | 03–07 | Satellite number  | 25544 |
+| 3  | 08–08 | Classification (U=Unclassified)  | U |
+| 4  | 10–11 | International Designator (Last two digits of launch year)  | 98 |
+| 5  | 12–14 | International Designator (Launch number of the year)  | 067 |
+| 6  | 15–17 | International Designator (piece of the launch)  | A |
+| 7  | 19–20 | Epoch Year (last two digits of year)  | 08 |
+| 8  | 21–32 | Epoch (day of the year and fractional portion of the day)  | 264.51782528 |
+| 9  | 34–43 | First Time Derivative of the Mean Motion divided by two [11]  | −.00002182 |
+| 10 | 45–52 | Second Time Derivative of Mean Motion divided by six (decimal point assumed)  | 00000-0 |
+| 11 | 54–61 | BSTAR drag term (decimal point assumed) [11]  | -11606-4 |
+| 12 | 63–63 | The number 0 (originally this should have been "Ephemeris type")  | 0 |
+| 13 | 65–68 | Element set number. Incremented when a new TLE is generated for this object.[11]  | 292 |
+| 14 | 69–69 | Checksum (modulo 10)  | 7  |
+
+### Line two
+
+| Field | Columns | Content | Example |
+| ----- | ------- | ------- | ------- |
+| 1  | 01–01 | Line number  | 2 |
+| 2  | 03–07 | Satellite number  | 25544 |
+| 3  | 09–16 | Inclination (degrees)  | 51.6416 |
+| 4  | 18–25 | Right ascension of the ascending node (degrees)  | 247.4627 |
+| 5  | 27–33 | Eccentricity (decimal point assumed)  | 0006703 |
+| 6  | 35–42 | Argument of perigee (degrees)  | 130.5360 |
+| 7  | 44–51 | Mean Anomaly (degrees)  | 325.0288 |
+| 8  | 53–63 | Mean Motion (revolutions per day)  | 15.72125391 |
+| 9  | 64–68 | Revolution number at epoch (revolutions)  | 56353 |
+| 10 | 69–69 | Checksum (modulo 10)  | 7  |