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.
On the day, Mercury will be at furthest angular distance with the sun as seen from earth, when it will be at 18.
Jupiter will be approaching Mars on the last day of the year, and the angular distance between the two planets will be less than two degrees over the dawn sky," according to a statement jointly issued by QCH director Dr Mohamed al-Ansari and noted astronomer Dr Beshir Marzouk.
Permanent impairment of vision of both eyes: Central visual acuity of 20/200 or less in the better eye, with corrective glasses, or central visual acuity of more than 20/200 if there is a field defect in which the peripheral field has contracted to such an extent that the widest diameter of visual field subtends an angular distance no greater than 20 degrees in the better eye
azimuth Angular distance, measured eastward along the horizon from the north point.
the minimum angular distance such that two distinct signals coming from diverse directions can be distinguishable, is related to the parameter Half Power Beam Width (HPBW) [1].
It is thus only possible to compute the azimuth [phi] of arrival or departure of the rays in this plane and defined as the horizontal angular distance from the tunnel axis z to the direction of the rays.
The resulting database is equivalent to peppering the entire sky with sources separated by an angular distance of two full moons," she said.
Initially, due to the long simulation durations in Matlab, tests were done only for the first half of an year, with a temporary distance of 10 days and a latitude angular distance of 11[degrees].
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.
The solstice occurs the instant the sun's position in the sky is at its greatest angular distance on the other side of the equatorial plane from the observer's hemisphere, which for us, of course, is the Northern Hemisphere.

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