Add converted TLE for Galileo GNSS satellite

README.md

@@ -22,24 +22,56 @@ And render it in this application:
 
 # See Also
 
+## Spacecruft
 Spacecruft:
 
 * https://spacecruft.org/spacecruft/gnss-earth
 
 * https://spacecruft.org/spacecruft/celestia
 
+## Celestia
 Upstream Celestia:
 
 * https://celestia.space/
 
 * https://github.com/CelestiaProject/Celestia
 
+## TLE
+
 TLE Conversion Spreadsheet:
 
 * https://www.classe.cornell.edu/~seb/celestia/hutchison/spreadsheets.html
 
 * https://www.classe.cornell.edu/~seb/celestia/hutchison/tle-xls.zip
 
+## Solar System Catalog
+*"Solar System Catalog" files are primarily used to define the objects which
+can be found in a stellar system, such as planets, moons, asteroids, comets,
+and spacecraft. They also have four other uses: they can define alternative
+surface textures, locations on or near an object, and orbital reference points.
+An SSC file can also edit objects which have been defined in other SSC catalog files.*
+
+
+Info on `.ssc` files:
+
+* https://www.classe.cornell.edu/~seb/celestia/creating-ssc-files.html
+
+* https://en.wikibooks.org/wiki/Celestia/SSC_File
+
+
+## Spice
+Spice TLE:
+"Evaluate NORAD two-line element data for earth orbiting spacecraft."
+
+* https://naif.jpl.nasa.gov/pub/naif/toolkit_docs/FORTRAN/spicelib/evsgp4.html
+
+## pyorbital
+Orbital and astronomy computations in python.
+
+* https://github.com/pytroll/pyorbital/
+
+* https://pyorbital.readthedocs.io/
+
 
 # License / Copyright
 Copyright (C) 2022 Jeff Moe.

data/galileo-gnss/galileo-gnss.ssc

@@ -0,0 +1,21 @@
+"2011-060A" "Sol/Earth" {
+  Class "spacecraft"
+  # Mesh  
+  Radius  0.005
+
+  EllipticalOrbit {
+    Epoch  2459719.59549104
+    Period  0.58659651
+    SemiMajorAxis  29600.181
+    Eccentricity  0.0004117
+    Inclination  56.9858
+    AscendingNode  22.1062
+    ArgOfPericenter  28.0726
+   MeanAnomaly  331.9949
+  }
+  Obliquity  56.9858
+  EquatorAscendingNode  22.1062
+  RotationOffset  312.7348
+  # Orientation  [  ]
+}
+