A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1859)
Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 109
t it retrogrades or falls back westward, makingthe circuit of the ecliptic once in about 19 years. Angular diameter ? In miles ? How compare with earth ? With sun ? (Howdemonstrated ?) 216. How is the plane of the moons orbit situated with respect to theecliptic ? (Illustrate by diagram.) 217. Is… … THE MOON. 105 The amount of this motion is 10° 35 per annum, which would require 18 years am2iy days for a complete revolution. 219. The diameter of the moon is only j^th ^rnpart as great as that of the sun ; and yet the ap-parent diameter of the moon is nearly equal tothat of the sun. The former…
Astronomy
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