Tarquin's planet

Tarquin's planet was an unidentified Class M planet once located in the Delphic Expanse. Cold and icy, its sole inhabitant is Tarquin, an exile condemned to live a life of isolation. Enterprise visited Tarquin's planet in October of 2153 while searching for the Xindi superweapon.

The planet is about thirty light years away from Tarquin's homeworld. It is located near Sphere 2 and a Xindi-Arboreal colony. 

Tarquin's planeet