Rodolphe Radau

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Jean Charles Rodolphe Radau (January 22, 1835 – December 21, 1911) was an astronomer and mathematician who worked in Paris at the Revue des deux Mondes for most of his life. He was the co-founder of the Bulletin Astronomique.

Radau was born in Angerburg, East Prussia, and after studying in Königsberg and working on the Three-body problem, he moved to Paris to collaborate with other scientists. In 1871 he was given the Ph.D. in honor of his work in mathematics.

He won the Prix Damoiseau of the French Academy of Sciences in 1892 working on planetary perturbations in the motion of the Moon. This work was of such a high quality that was elected to the Academy in 1897.

A crater on Mars is named in his honor.