A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1853)
Mattison, Hiram, 1811-1868 · New York, F. J. Huntingdon [etc.] · leaf 84
of arc iii theecliptic. In thismanner the equinoc-tial points are slowly westward, receding … 157. What said of the orbits of Mercury and Venus ? Of eccentricity? 158. Are the equinoctial points marked by any fixed object in the heavens ?How know when reached ? 159. Are they stationary or not ? Reached how much earlier annually ? PRECESSION OF THE EQUINOXES. SI or falling back upon the…
Astronomy
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