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Calculate Distance to 61 Cygni in Meters and Parsecs

7) Friederich Bessel suspected that the star 61 cygni, scarcely visible with the naked eye, might be one of our closest neighbors. He was able to measure the total angular shift of 61 cygni, arising from the earth's orbital motion, as 0.628 arc seconds. Taking the average distance of the earth from the sun as 149.6 million km, calculate the distance to 61 cygni in meters and parsecs.

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The distance to 61 cygni in meters and parsecs is determined. The advantage distance of the earth is determined.