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But Bessel's observations, between 1837 and 1840, of 61 Cygni, a star with the large proper motion of over 5", established its annual parallax to be 0".3483; and this was confirmed by Peters, who found the value 0".349. Later determinations for alpha2 Centauri, by Gill, make its parallax 0".75 This is the nearest known fixed star; and its light takes 4 1/3 years to reach us.
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