How did Alessandro Piccolomini’s De le stelle fisse label stars?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Astronomical map Star trails over banksia trees, in Gippsland, Vic., Austl. The south celestial pole, located in the constellation Octans, is at the centre of the trails.

In his 1540 work De le stelle fisse, the Italian astronomer Alessandro Piccolomini introduced a system that labeled stars using letters.1

While this was the first book of printed star charts to utilize a lettering system for stellar identification, its specific nomenclature did not gain widespread adoption, unlike the later system developed by Johann Bayer, which assigned Greek and Latin letters to stars based on their brightness within a constellation.1