I?m?getting close to release of my latest Add-On: Ran, the solar system i?ve had in the works for some time (see my website for more info and screenshots).
But, i have a problem to solve before i can publish. And again, it?s an XYZ trajectory challenge: i need to get a starship from A to B, and don?t have any idea what i?m doing.
However, this time, i have a partial solution... And only need help with the details:
I have built an Orion rocket, and by modifying the Galileo XYZ that comes with Celestia, i have managed to get the rocket into the solar system, brake at a gas giant, and then get it to rendezvouz with the target planet. The problem is, that i don?t know how to insert it into orbit around the planet.
As a workaround, i now have TWO ssc objects: one shows the spaceship entering the system and going to the planet, with another showing it in the desired orbit. I have managed to put the two just a kilometer apart. But i don?t want that: i want these two objects to be two phases of the same, not two different ones.
So, i?m hoping someone here would help me out: getting this right would make the Add-On a much more interesting release... Here?s a screenshot of the ship, the trajectory, with the SSC and XYZ attached below.
ORION XYZ:
----------------
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ORION SSC:
-----------------
# HD / HIP 297297
# RAN ---------------------------------
"_Hroenn" "Ran"
{
Texture "th_hroenn.ctx"
NightTexture "th_hroenn.ctx"
Radius 8458.6
Oblateness 0
Atmosphere {
Height 91
Lower [ 0.43 0.52 0.65 ]
Upper [ 0.26 0.47 0.84 ]
Sky [ 0.40 0.6 1.0 ]
Sunset [ 1.0 0.6 0.2 ]
CloudHeight 11.7
CloudSpeed 75
CloudMap "th_hroennclouds2k.png"
}
EllipticalOrbit
{
Period 1.9345
SemiMajorAxis 1.578
Eccentricity 0.041
Inclination 0.000000
MeanAnomaly 245.829
Epoch 2492583.736111
}
RotationPeriod 12
Obliquity 29
Albedo 0.34
RotationOffset -61.55
}
"Aegir" "Ran"
{
Texture "th_raegir.ctx"
Color [ 0.75 0.85 1.0 ]
HazeColor [ 0.5 0.8 1.0 ]
HazeDensity 0.2
Radius 86470.7
Oblateness 0.099
EllipticalOrbit
{
Period 12.8010
SemiMajorAxis 5.566
Eccentricity 0.044
Inclination 0
MeanAnomaly 143.947
Epoch 2492583.736111
}
Atmosphere {
Height 350
Lower [ 0.8 0.8 0.5 ]
Upper [ 0.6 0.6 0.6 ]
Sky [ 0.8 0.8 0.5 ]
CloudHeight 160
CloudSpeed 115
CloudMap "th_raegirclouds2k.png"
}
RotationPeriod 6
Obliquity 32
Albedo 0.53
Rings {
Inner 70000
Outer 169000
Texture "th_raegirrings.png"
Color [ 1.0 0.88 0.82 ]
}
}
"Orion Starship" "Ran"
{
Class "spacecraft"
Mesh "th_orion.3ds"
Radius 3.1
Beginning 2486093.615972 #Aug. 4. 2094 at 2:46:60
Ending 2492577.38148 # May 2. 2112 at 21:09:20
EllipticalOrbit
{
Period 1.9345
SemiMajorAxis 1.579
MeanAnomaly 11.03
Epoch 2492583.736111
Eccentricity 0.041
}
Albedo 0.1
SampledOrbit "th_orion.xyz"
}
"Orion Starship Orbiting" "Ran/Hroenn"
{
Class "spacecraft"
Mesh "th_orion.3ds"
Radius 3.1
Beginning 2492577.38148 # May 2. 2112 at 21:09:20
EllipticalOrbit
{
Period 0.218910
SemiMajorAxis 14201.4
Eccentricity 0
Inclination -209
MeanAnomaly 182.25
Epoch 2492577.38148
}
Albedo 0.1
}
Also, if you want a better feel for it, here?s a lo-res package that is structured as a complete add-on, but where only the objects in question are supplied:
http://runar.thorvaldsen.net/celestia/temp/ran.zip (3.1 MB). NOTE: use the CelURL in the package to go to the right time and place.
Thank you for reading this... And please help out if you can
-rthorvald
