Pluto-Charon barycentric system

[granthutchison]

Here's the final definition for Pluto and Charon in mutual orbit around their barycentre - slight changes from my original back-of-the-envelope effort, but nothing dramatic.
You'll need to download my empty.3ds invisible object for the barycentre itself. It's on Selden's website at http://www.lns.cornell.edu/~seb/celestia/hutchison/empty.3ds, and comes in at a massive 1K (when did Rass' or Fridger ever offer you anything useful that didn't take all night to download, eh? ).

Code: Select all

"Pluto-Charon" "Sol"
{
   Mesh "empty.3ds"
   Color [ 0 0 0 ]
   Radius 1500

   CustomOrbit "pluto"
   EllipticalOrbit
   {
   Period            248.54
   SemiMajorAxis     39.48168677
   Eccentricity       0.24880766
   Inclination       17.14175
   AscendingNode    110.30347
   LongOfPericenter 224.06776
   MeanLongitude    238.92881
   }

   Albedo 1.0
}

"Pluto" "Sol/Pluto-Charon"
{
   Texture "pluto.jpg"
   BumpMap "plutobump1k.jpg"
   BumpHeight 2.5
   Radius 1137

   EllipticalOrbit
   {
   Period           6.387246
   SemiMajorAxis    1499
   Eccentricity     0.0002
   Inclination      115.602
   AscendingNode    228.328
   ArgOfPericenter  47.314
   MeanAnomaly      93.440
   }

   Obliquity               115.6
   EquatorAscendingNode    228.3
   RotationOffset          320.8
   
   Albedo            0.55
}

"Charon" "Sol/Pluto-Charon"
{
   Texture "charon.jpg"
   Radius   586

   InfoURL "http://www.nineplanets.org/pluto.html#Charon"

   EllipticalOrbit
   {
   Period          6.387246
   SemiMajorAxis   17906
   Eccentricity    0.0002
   Inclination     115.602
   AscendingNode   228.328
   ArgOfPericenter 227.314
   MeanAnomaly     93.440
   }

   Obliquity               115.9
   EquatorAscendingNode    227.3
   RotationOffset          140.4
   
   Albedo         0.35
}


Grant

PS: I've now re-edited the code above to remove the RotationPeriod definitions, which are unnecessary - Pluto and Charon remain synched on the barycentre once they're set up correctly.

[Rassilon]

Hey now Anyways cheers on that grant...Nice modding work

[ANDREA]

Here's the final definition for Pluto and Charon in mutual orbit around their barycentre - slight changes from my original back-of-the-envelope effort, but nothing dramatic.

Truly amazing and instructive, thank you Grant, well done.

Andrea