Auric planets are considered part of the terran group for the purposes of my mod. Therefore, they cannot be terraformed. I assigned it to this group based on the description of the planet, which indicates it can support life and says nothing about temperatures/hydrosphere. If auric planets always have hot or very hot temperatures, let me know and I will switch it to the desert category. Thanks!
From a while back, but just for confirmation....
Auric planets are tagged as cat_hab3, so are in the same class as arid/jungle/tundra/water etc. They have a single class override which makes them more common around blue stars, but are otherwise identical.
The temperature condidtions are largely controlled by the type of star the planet is orbiting, and how closely.
There are no overrides in cat_hab3 or US_auric that specify temperature.
Most Auric planets tend to have heat conditions solely because they tend to be found around blue stars, which are the hottest.