 | William Thomas Brande, George William Cox - Art - 1875 - 968 pages
...from being of unequal lengths at the different seasons of the year. Hour Anglo of a Heavenly Body. The angle at the pole between the celestial meridian...declination passing through the place of the body. Hour Circle*. [HORARY CIRCLES.] Hours. In Mythology. | l Im. ;;. | Hours, Canonical. The seven hours... | |
 | John Bradley Harbord - Naval art and science - 1883 - 472 pages
...ascension of a heavenly body is the arc of the equinoctial intercepted between the first point of Aries and the circle of declination passing through the place of the body. Or it may be defined as the angle at the pole of the heavens, between the hour-circle passing through... | |
 | John Merrifield - Nautical astronomy - 1886 - 376 pages
...moon's meridian passage — Examples — Exercise— Examination. HOUR ANGLES AND MERIDIAN PASSAGES. THE HOUR ANGLE of a heavenly body is the angle at the pole, included between the hour circle through the centre of the body and the meridian of the observer. In... | |
 | William Mitchell Gillespie - Surveying - 1887 - 722 pages
...the plane of the horizon is the terrt*Irial meridian, or true north and south line. The hour-anijle of a heavenly body is the angle at the pole between the meridian and the declination circle passing through the body. The parallactic angle is the angle at... | |
 | Nathaniel Bowditch - Nautical astronomy - 1888 - 704 pages
...26 16.71 THE MOON AND PLANETS.— See Art 229, Chap. II, Part II. CHAPTER IV. HOUR ANGLE. Art. 341. The hour angle of a heavenly body is the angle at the pole of the celestial concave tetween the declination circle of the heavenly body and the celestial meridian.... | |
 | Charles Augustus Young - Astronomy - 1894 - 520 pages
...distance. § 32 J THE VERNAL EQUINOX. 21 32. Hour-Angle. — The Hour-Angle of a star at any moment is the angle at the pole between the celestial meridian and the hour-circle of the star, which angle is measured by the arc of the celestial equator intercepted between... | |
 | Charles Augustus Young - Astronomy - 1897 - 554 pages
...distance. § 32J THE VERNAL EQUINOX. 21 32. Hour-Angle. — The Hour-Angle of a star at any moment is the angle at the pole, between the celestial meridian and the hour-circle of the star, which angle is measured by the arc of the celestial equator intercepted between... | |
 | William Robert Martin - Nautical astronomy - 1899 - 474 pages
...passages — Moon's meridian passage — Corrections for run — Effect of run on altitude and time. THE hour angle of a heavenly body is the angle at the elevated Hour angles pole between the celestial meridian and the circle of declination passing through... | |
 | Eugene Lamb Richards - Nautical astronomy - 1901 - 188 pages
...horizon is the small circle which bounds the vision of the observer. Hour Angle. The hour angle of any heavenly body is the angle at the pole between the celestial meridian of the observer and the hour circle passing through the body. Hour Circles. Hour circles are circles... | |
 | Charles Augustus Young - Astronomy - 1902 - 636 pages
...an entirely different quantity to be defined later (Sec. 27). The Hour Angle of a star at any moment is the angle at the pole between the celestial meridian and the hour-circle of the star. In Fig. 7, for the body m it is the angle ml'Z, or the arc QY. Definition... | |
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The hour angle of a heavenly body, is the angle at the pole between the celestial meridian and the circle of declination passing through the place of the body ; thus, zpx is the hour angle of x. 
