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Astronomy, a handy manual for students and others (1918)
Dyson, Frank Watson, Sir, 1868-1939 · New York, E.P. Dutton & Co. · leaf 224
x of Sirius is known to be 0*37, and the semi-major axis of the orbit of the companion around Siriusis approximately 8or/. Construct a diagram (Dia-gram LXXXIII) in which © stands for the Sun andS for Sirius, and let ©S denote the distance of theSun from Sirius. Draw ©E perpendicular to ©S,and make… … Diag. LXXXIII. the angle ESQ = parallax of Sirius = 037\and the angle SQS = semi-major of orbit = 80. J From which it follows that SS : QE = 8o : 0-37, or that the semi-major axis of the orbit is —, or 22J 37 times the Earths distance from the Sun. Thus thelinear dimensions of the orbit of the…Astronomy
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