I was watching the finale of American Gods ("Come to Jesus"), which centered on the goddess Ostara, and I was also just reading this interesting little article on Astraea, and I thought, the two names sound sort of similar...
Ostara is associated with the Spring, and this presents some obvious problems if we relate Astrea to Virgo, and the etymology of Ostara seems to be "dawn" as opposed to "starry", but Ostara is related to the PIE root for "shine" (h₂ews-), which is close to the PIE root for "star" (h₂stḗr), itself derived from the root for "glow" (h₂eHs-).
The concept of return is a major part of Astraea's story, marking the beginning of a new golden age [Astronomica 2.25], which is a rebirth and consistent in that sense with the vernal domain of Ostara...