Page "Extrasolar planet" Paragraph 9
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W. S. Jacob at the East India Company's Madras Observatory reported that orbital anomalies made it " highly probable " that there was a " planetary body " in this system.
See of the University of Chicago and the United States Naval Observatory stated that the orbital anomalies proved the existence of a dark body in the 70 Ophiuchi system with a 36-year period around one of the stars.
However, Forest Ray Moulton published a paper proving that a three-body system with those orbital parameters would be highly unstable.
During the 1950s and 1960s, Peter van de Kamp of Swarthmore College made another prominent series of detection claims, this time for planets orbiting Barnard's Star.
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