 | William Guy Peck - Astronomy - 1883 - 406 pages
...horizon, and its azimuth is the angle between the meridian and a vertical circle through the body. The zenith distance of a body is its angular distance from the zenith. It is the complement, of the altitude. The altitude and the zenith distance of a body are measured... | |
 | John Thornton (M.A.) - Astronomy - 1890 - 372 pages
...meridian. EZW, the prime vertical. MZ, IZ, FZ, arcs of other vertical circles. R, a star's position. The zenith distance of a body is its angular distance...reached the meridian one half of its visible path the distance of the visible horizon in miles is equal to the square root of the height of the eye in... | |
 | John Huntington Crane Coffin - Nautical astronomy - 1919 - 284 pages
...passing through the body. The altitude of all bodies on the sphere are included between 0° and 90°. 9. The Zenith Distance of a body is its angular distance ' ', from the zenith, and is the complement of the altitude. Altitude + zenith distance = 90°. 10. The Azimuth, or true bearing,... | |
 | Harold Spencer Jones - Astronomy - 1922 - 458 pages
...angle between the vertical circle through the star and the meridian, ie if the arcs ZA and SQ be known. The Zenith Distance of a body is its angular distance from the zenith (ZA). The Altitude of a body is its angular elevation above the horizon (QA). Obviously the altitude... | |
 | Harold Spencer Jones - Astronomy - 1923 - 462 pages
...EZWZ', Prime Vertical SQ or SWNQ, Star's Azimuth ',',! , Star's Altitude ZA, Star's Zenith Distance The Zenith Distance of a body is its angular distance from the zenith (ZA). The Altitude of a body is its angular elevation above the horizon (QA). Obviously the altitude... | |
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The zenith distance of a body is its angular distance from the zenith, measured on the vertical circle passing through the body from 0° to 90°. It is the complement of the altitude. 