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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. "
Navigation and Nautical Astronomy - Page 60
by H. W. Jeans - 1858
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Plane and Spherical Trigonometry ...

Henry W. Jeans - 1842 - 138 pages
...of a heavenly body is the arc of the celestial equator intercepted between the first point of Aries and the circle of declination passing through the place of the body in the celestial concave. Or it is the angle at the pole of the heavens between the circles of declination...
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Outlines of Astronomy

John Frederick William Herschel - 1849 - 672 pages
...to a point in the equinoctial, as a vertical circle does to a point in the horizon. (107.) DEF. 24. The hour angle of a heavenly body is the angle at the pole included between the hour circle passing through the body, and the celestial meridian of the place...
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Navigation and Nautical Astronomy: For the Use of British Seamen

James Inman - 1849 - 302 pages
...24h in a sidereal day, and to begin from 0 when the first point of Aries is on the meridian. (115.) The Hour Angle of a heavenly body is the angle at the pole (measured west or east) between the celestial meridian and the circle of declination passing through...
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Navigation and Nautical Astronomy: The Practical Part, Containing Rules for ...

H. W. Jeans - 1853 - 314 pages
...; thus suppose the heavenly body x to rise at D, and after describing the arc D x D', to set at D', then the amplitude of x is either DE or D' w. The...thus, zpx is the hour angle of x. CHAPTEE II. ON TIME. TJie Solar year, and Sidereal year. 15. A solar year is the interval between the sun's leaving the...
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A Dictionary of Science, Literature, & Art: Comprising the ..., Volume 2

William Thomas Brande - 1866 - 992 pages
...from being of unequal lengths at the different seasons of the year. Hour Angle of a Heavenly Body. The angle at the pole between the celestial meridian...declination passing through the place of the body. Hour Circles. [HORARY CIRCLES.] Hours. In Mythology. [HoR.«.] Hours, Canonical. The seven hours of...
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Navigation and nautical astronomy, Volume 2; Volume 53

Henry William Jeans - 1868 - 228 pages
...distance from the west point at which it sets, the arcs or distances being measured on the horizon. 35. The hour angle of a heavenly body, is the angle at...declination passing through the place of the body. Practical Exercises on the preceding Definitions. In order more clearly to understand the definitions...
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Hand-book for the stars: containing rules for finding the names ..., Volume 17

Henry William Jeans - 1868 - 80 pages
...of a heavenly body is the arc of the celestial equator intercepted between the first point of Aries and the circle of declination passing through the place of the body in the celestial concave; or, it may be defined to be, the angle at the pole of the heavens between...
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Navigation and nautical astronomy, Volume 1; Volume 52

Henry William Jeans - 1870 - 288 pages
...point at which it sets, the arcs or distances being measured on the horizon. (59.) The hour an(jle of a heavenly body is the angle at the pole between...declination passing through the place of the body. (60.) A solar year is the interval between the sun's leaving the first point of Aries and returning...
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Nautical tables, revised by J.W. Inman. With Navigation and ..., Volume 46

James Inman - 1872 - 826 pages
...24b in a sidereal day, and to begin from 0 when the first point of Aries is on the meridian. (115.) The Hour Angle of a heavenly body is the angle at the pole (measured west or east) between the celestial meridian and the circle of declination passing through...
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Plane and spherical trigonometry. [With] Solutions of problems. [Followed by ...

Henry William Jeans - 1873 - 288 pages
...of a heavenly body is the arc of the celestial equator intercepted between the first point of Aries and the circle of declination passing through the place of the body in the celestial concave. Or, it is the * If a line be drawn from C, the centre of the earth, to A,...
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