The elements of theoretical and descriptive astronomy, for the use of colleges and academies (1872)
White, Charles J. (Charles Joyce), 1839-1917 · Philadelphia, Claxton, Remsen & Haffelfinger · leaf 237
t 30, and the period 75years. Its eccentricity is 0.95. Since the distance of a Centauri from theearth is approximately known, we can ob-tain some idea of the dimensions of theorbit. If Em the figure represents the earth,we shall have, in the right-angled triangleCOE, the angle E equal to 15, and… … 228 COLOKED STARS. Again, knowing the radius of the orbit and the period, wecan obtain an approximate value of the mass of a Centaurifrom the formula in Art. 214. It will be found to be aboutT7oths of the mass of the sun. COLORED STARS. 285. Many of the stars, both isolated and double, shine witha…
Astronomy
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