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High res Ultima Thuli (Arrokoth) model?
Posted: 01.03.2021, 13:51
by trappistplanets
does anyone have a high resolution model of ultima thuli?
there are only low res models that are lacking details and there should be somthing nicer
but no nasa didn't release there high res shape model
so does anyone have one they made i can use?
- want a model with this shape in high detail
Posted: 01.03.2021, 15:13
by SevenSpheres
As far as I know,
this is the highest resolution Arrokoth model that exists. It's the model that's included in Celestia Origin and Project Echoes.
Posted: 01.03.2021, 17:36
by pedro_jg
The most recent Arrokoth shape model I know of is from
Spencer et al. (2020). The files themselves can be downloaded at
this data archive (more specifically,
shape_models.zip) provided by the main author of that paper.
Since
Askaniy's texture (which is used in both Origin and Echoes) was made from an image projection onto the preliminary shape model of Stern et al. (2019) which is linked above, the texture might not fit the newer model in the most satisfying way.
Posted: 01.03.2021, 19:41
by SevenSpheres
pedro_jg wrote:The most recent Arrokoth shape model I know of is from Spencer et al. (2020). The files themselves can be downloaded at this data archive (more specifically, shape_models.zip) provided by the main author of that paper.
Model converted to cmod attached. This model has more polygons, but doesn't really look too different from the old one.
Update March 3: model replaced with fixed version by pedro_jg. No clue what was wrong with the original one.SSC from Celestia Origin:
Code: Select all
"486958 Arrokoth:Arrokoth:2014 MU69:Ultima Thule:1110113Y:PT1" "Sol"
{
Class "asteroid"
Mesh "arrokoth.cmod"
Orientation [ -50 0 1 0 ]
Texture "arrokoth.*"
Radius 18
EllipticalOrbit
{
Epoch 2458484.5 # 2019 Jan 01
Period 297.371052339075
SemiMajorAxis 44.55129423264393
Eccentricity 0.04097873475827028
Inclination 2.451769758298457
AscendingNode 158.9786644650622
ArgOfPericenter 174.6720281547497
MeanAnomaly 315.8844151813905
}
UniformRotation
{
Period 15.938
Inclination 98.18711913
AscendingNode 42.5072541
}
LunarLambert 0.5
Albedo 0.21
InfoURL "https://en.wikipedia.org/wiki/486958_Arrokoth"
}
Posted: 03.03.2021, 16:17
by trappistplanets
SevenSpheres wrote:Model converted to cmod and properly offset texture attached. This model has more polygons, but doesn't really look too different from the old one.
that model needs to be a bit flatter expeccily th bigger side (look at the 3d asteroid catalogue model
Posted: 04.03.2021, 01:11
by fyr02
trappistplanets wrote:that model needs to be a bit flatter expeccily th bigger side (look at the 3d asteroid catalogue model
Spencer et al. (2020) modelled Arrokoth and found that Arrokoth is probably not as flat as originally expected, hence why this model is not as flat. The one at the 3d asteroid catalogue is outdated.
Posted: 06.03.2021, 13:20
by trappistplanets
fyr02 wrote:Spencer et al. (2020) modelled Arrokoth and found that Arrokoth is probably not as flat as originally expected, hence why this model is not as flat. The one at the 3d asteroid catalogue is outdated.
so thats why the one model isn't flat
Added after 7 minutes 34 seconds:pedro_jg wrote:The most recent Arrokoth shape model I know of is from Spencer et al. (2020). The files themselves can be downloaded at this data archive (more specifically, shape_models.zip) provided by the main author of that paper.
where is shape model.zip
i want to process a topo/DEM from it but idk where it is
Added after 2 minutes 3 seconds:nevermind i found it
