Note 127 — BOOK II. AN ACCOUNT OF THE WORLD AND THE ELEMENTS.
John Bostock translation
“astroque suo eventu assignat;” the word astrum appears to be synonymous with sidus, generally signifying a single star, and, occasionally, a constellation; as in Manilius, i. 541, 2.
“... quantis bis sena ferantur Finibus astra....”
It is also used by synecdoche for the heavens, as is the case with the English word stars. See Gesner’s Thesaurus.