| 单词 | hour angle |
| 释义 | hour angle (once / 422119 pages) n WORD FAMILY hour angle: hour angles USAGE EXAMPLESThe Hour Angle of a star is the angle between its hour circle and the meridian. Comstock, George C., A Text-Book of Astronomy(2011) By hour angle, I mean the distance in time from your meridian to the meridian of the point or celestial body in question. Draper, Ernest Gallaudet, Lectures in Navigation(2010) For the longitude, the altitude of the sun must be ascertained before and after noon, and two hour angles must be measured. D'Anvers, N., The Fur Country—Seventy Degrees Nor...(2010) 1n the angular distance along the celestial equator from the observer's meridian to the hour circle of a given celestial body Hyper distance the property created by the space between two objects or points 2n (astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day Syn|Hyper HA angular distance the angular separation between two objects as perceived by an observer |
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