989

Events 
 September – Halley's Comet is at perihelion
 Sankore University founded in Timbuktu

 Births 
 Adémar de Chabannes (died 1034), monk and historian
 Gisela of Swabia (died 1043), Holy Roman Empress

 Deaths 
 6 September – Sharaf al-Daula, emir of Kerman and Fars