Polyxo is asteroid #308 and also known as 1950 FQ. Polyxo was discovered by the French astronomer Alphonse Louis Nicolas Borrelly at the Marseille Observatory. Polyxo is of the rare type T, but besides this a common Main Belt Asteroid.

Polyxo is named after a character from Greek mythology, but Greek mythology knows several female entities named Poluxṓ (Πολυξώ), hence who is the correct namesake of the asteroid is unclear. Among these female entities are minor figures, who are less likely to be the correct namesake of the asteroid, and several water-spirits, who could have developed from one into the other and also have adopted additional roles. Best known and hence the most likely namesake is the wife of Nykteus (Νυκτεύς), the king of Thebes. Poluxṓ (Πολυξώ) and Nykteus (Νυκτεύς) are the parents of at least Nykteis and Antiope. Both were girls. Nykteis became the wife of Polydoros, who became king of Thebes. Antiope was a lover of Zeus. Antiope is also known as the daughter of the river Asopos. Antiope gave birth to the twin brothers Zethos and Amphion. Both reigned Thebes, but Amphion became also the husband of Niobe, who was the daughter of Tantalos. The meaning of the name Poluxṓ (Πολυξώ) is unknown.

The situation here is uncomfortable because neither the literal meaning nor a tale of Polyxo is known. Her astronomy is only special insofar as she belongs to the rare T-type, which is a sub-type of the common C-type. T is rather found in the proximal section of the Asteroid Main Belt, while Polyxo seems to orbit in the intermediate if not the distal section. Even whether Polyxo really means the mother of Antiope remains unclear, so that much evidence is needed first for confirming any type of influence in synastries. For all other possible meanings too. So an uncertainty is what I propose as a working hypothesis for the interpretation of Polyxo.