Asteroid 564, Dudu, was discovered on May 9, 1905 by Paul Gotz at Heidelberg Observatory near Hamburg, Germany. It has a period of 4 years, 208 days and is about 37 miles in diameter.
It was named for a character in Friedrich Nietzsche's Also Sprachen Zarathustra (Thus Spake Zarathustra).
Some research was done on Dudu by Batya Stark (who created the glyph for Dudu) in the 1980s. Astrologically, Dudu seems to have to do with what its name suggests: "crap" and getting rid of it and the problems that entails, trouble, addiction, power struggles.