catasterismus

From Ancient Greek καταστερισμός (katasterismós, “star legend”), from καταστερίζω (katasterízō, “to place among the stars”), from κατά (katá, “down”) + ἀστήρ (astḗr, “star”).

catasterismus (uncountable)

1. (Greek mythology) The state of being transformed into a star, constellation, comet or other celestial object.

   ... the presence of Phaethon's catasterismus in the Metamorphoses.

• catasterize
• catasterism