angular distance


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Related to angular distance: angular velocity, Angular displacement
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Noun1.Angular distance - the angular separation between two objects as perceived by an observerangular distance - the angular separation between two objects as perceived by an observer; "he recorded angular distances between the stars"
latitude - the angular distance between an imaginary line around a heavenly body parallel to its equator and the equator itself
longitude - the 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
celestial longitude, right ascension, RA - (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; "one hour of right ascension equals fifteen degrees"
angle - the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians
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 anomaly - the angular distance of a point in an orbit past the point of periapsis measured in degrees
Translations
References in classic literature ?
Barbicane did not answer, but after a rapid glance at the captain, took a pair of compasses wherewith to measure the angular distance of the terrestrial globe; then from the lower window he took an exact observation, and noticed that the projectile was apparently stationary.
azimuth Angular distance, measured eastward along the horizon from the north point.
The angular distance between the magnified images of the closer galaxies was smaller.
The resulting database is equivalent to peppering the entire sky with sources separated by an angular distance of two full moons," she said.
To get this, we must to determine the real solar time (it is created by splitting the time interval between two successive upper culminations of the sun for 24 hours), declination (one of the two coordinates of the equatorial coordinate system, which gives the angular sun distance from the celestial equator and depends on the date of calculation), sun altitude and azimuth (angle applied to the meridian clockwise--the horizontal angular distance from a reference direction).
Greatest elongation east of the Sun--an angular distance of 20[degrees]--is reached on April 26, when Mercury will set 2h12m after sunset; an hour after sunset, the magnitude +0.

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