13223 Cenaceneri (1997 PQ4) is a main-belt asteroid discovered on August 13 1997 by L. Tesi at San Marcello Pistoiese.The asteroid is named after work of Giordano Bruno La Cena delle Ceneri (The Dinner of the Ashes) in which for the first time in Western philosophical thought there is discussion of the infinity of worlds in the universe. He published it in 1584.
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