A text-book of general astronomy : for colleges and scientific schools (1888)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston ; London : Ginn & Company · leaf 162
o that the side OM can be computed, which is thedistance of the moon from the earths centre. Knowing this, the horizontalparallax KMO, or the semi-diameter of the earth as seen from the moon,follows at once. The moons parallax can also be deduced from observations at a singlestation on the earth,… … 150 THE MOON. nal circle. Near the eastern horizon the parallax (always depressing an ob-ject) increases her right ascension ; at setting, vice versa. On the meridianthe declination only is affected. But the motion of the moon must be al-lowed for, as the observations to be compared are necessarily…
Astronomy
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