| 单词 | angular distance |
| 释义 | angular distance (once / 80404 pages) n WORD FAMILY angular distance: angular distances USAGE EXAMPLESMagnetic ~, the angular distance of a heavenly body, when on the horizon, from the magnetic east or west point as indicated by the compass. Webster, Noah, Webster's Unabridged Dictionary(2012) At fifty-four minutes past seven, p. m., angular distance from Sirius, 74° 48′ 20″; length of tail, 24° 16′. Anonymous, Antigua and the Antiguans, Volume I...(2012) These angular distances are attained only when the sun is on the horizon, and they increase as it rises. Various, Encyclopaedia Britannica, 11th Edit...(2012) n the angular separation between two objects as perceived by an observer he recorded angular distances between the stars Hypo|Hyper latitude the angular distance between an imaginary line around a heavenly body parallel to its equator and the equator itself longitudethe angular distance between a point on any meridian and the prime meridian at Greenwich celestial latitude, dec, declination(astronomy) the angular distance of a celestial body north or to the south of the celestial equator; expressed in degrees; used with right ascension to specify positions on the celestial sphere RA, celestial longitude, right ascension(astronomy) the equatorial coordinate specifying the angle, measured eastward along the celestial equator, from the vernal equinox to the intersection of the hour circle that passes through an object in the sky; usually expressed in hours and minutes and seconds; used with declination to specify positions on the celestial sphere HA, hour angle(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 true anomalythe angular distance of a point in an orbit past the point of periapsis measured in degrees angle the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians |
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