Amphitrite is an asteroid 212 kilometers in diameter. It will need to be hollowed out to create a terrarium.
Each one of Renee’s 2,940 followers can have 7.22 hectares of land on the inside surface.
One year on Amphitrite lasts 1,492 Earth days.
One day on Amphitrite lasts 11 minutes.
That creates a centrifugal force of 0.96 gees on the interior.