Jupiter's Red Spot and Celestia

[alegator]

Does Celestia render Jupiter's Red Spot's position accurately in time?

[selden]

Not as shipped with 1.2.5 or eariler. They use the magnetic rotational period for Jupiter, which doesn't match the visual periods of the cloud layers.

See http://www.lns.cornell.edu/~seb/celestia/hutchison/index.html for modifications to solarsys.sys. Grant worked out the values for Jupiter's rotation and orientation so that the Red Spot is positioned properly.

[alegator]

Thanks Selden, I included the changes in the solarsys.ssc file and verified it.