Friedrich Karl Arnold Schwassmann
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Friedrich Karl Arnold Schwassmann (March 25 1870 – January 19 1964) was a German astronomer).
He was co-discoverer with Arno Arthur Wachmann of the periodic comets 29P/Schwassmann-Wachmann, 31P/Schwassmann-Wachmann and 73P/Schwassmann-Wachmann.