Ensoulment

[Koen G]

Lodi Nauta, The Preexistence of the Soul in Medieval Thought, in Recherches de Théologie ancienne et médiévale 63, 1996, 93-135, p.8:

In the famous ninth metre in Book III (O qui perpetua), for example, Boethius wrote that God had each soul allotted to a star, a light chariot (a levis currus), for its companion from which it descended at its appropriate time into a body.

The star is the companion of the (anthropomorphic) soul.