Hipparchus star catalog

A folio from the Codex Climaci Rescriptus

The Hipparchus star catalog is a list of at least 850 stars that also contained coordinates of stellar positions in the sky, based on celestial equatorial latitude and longitude.[1] According to British classcist Thomas Heath, Hipparchus was the first to employ such a method to map the stars, at least in the West.[2] Hipparchus is also credited with creating a celestial globe, although this object is not known to be extant.[3] The catalog was lost to history, until parts of it were rediscovered in 2022 in the Codex Climaci Rescriptus, an ancient palimpsest found in Saint Catherine's Monastery on Mount Sinai.[4]