De Astronomia or Poeticon Astronomicon
De Astronomia was first published, with accompanying figures, by Erhard Ratdolt in Venice, 1482, under the title Clarissimi uiri Hyginii Poeticon astronomicon opus utilissimum This "Poetic astronomy by the most renowned Hyginus, a most useful work," chiefly tells us the myths connected with the constellations, in versions that are chiefly based on Catasterismi, a work that was traditionally attributed to Eratosthenes.
Like the Fabulae the Astronomia is a collection of abridgements, and the style and level of Latin competence and the elementary mistakes (especially in the rendering of the Greek originals) were held by the anonymous contributor to the Encyclopaedia Britannica 11th ed., 1911, to prove that they cannot have been the work of "so distinguished" a scholar as G. Julius Hyginus. It was further suggested that these treatises are an abridgment made in the latter half of the 2nd century of the Genealogiae of Hyginus by an unknown adapter, who added a complete treatise on mythology. The star lists in the Astronomia are in exactly the same order as in Ptolemy's Almagest reinforcing the idea of a 2nd century compilation.
Read more about this topic: Gaius Julius Hyginus