Asteroid 452307, Manawydan, an Amor asteroid, was discovered on December 5, 1997 by ODAS in Caussols, Alpes-Maritimes, France. It has a period of 2 years, 201 days.
It was named for a Welsh mythological figure, Manawydan fab Llŷr, brother of Bran the Blessed and Bronwyn, husband of Rhiannon and stepfather of Pryderi.
Astrologically, asteroid Manawydan seems to have to do with wise counsel or governance.