uranomancy
/ˈjʊərənə(ʊ)ˌmansi/ /ˈjɔːrənə(ʊ)ˌmansi/rare. Now historical
noun
Divination by the stars; astrology.
Origin
Mid 17th century; earliest use found in George Starkey (1628–1665), alchemist, medical practitioner, and writer. From urano- + -mancy.