Barnard's Star
From the early 1960s to the early 1970s, Peter van de Kamp argued that planets orbited Barnard's star. His specific claims of large gas giants were refuted in the mid-1970s after much debate. In November 2018, a candidate super-Earth planetary companion known as Barnard's Star b was reported to orbit Barnard's Star. It is believed to have a minimum of (Earth masses) and orbit at .