angular distance


Also found in: Thesaurus, Encyclopedia, Wikipedia.
Related to angular distance: angular velocity, Angular displacement
ThesaurusAntonymsRelated WordsSynonymsLegend:
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.
According to QCH, during this phenomenon, Mercury will be at furthest angular distance from the Sun as observed from the Earth with the angle between Mercury and Sun's centre to be 27.7 degrees and will appear for the longest duration.
azimuth Angular distance, measured eastward along the horizon from the north point.
During the "greatest elongation" period, the planet will be at the farthest angular distance to the Sun as observed from Earth, Dr Marzouk said.
The device had a sighting mechanism and helped the sailors measure the angular distance between two objects, like the sun and the visible horizon.
The angular distance from Epsilon to Alpha is almost exactly 5[degrees] (5[degrees] 07', to be precise), and the distance from Epsilon to Theta is 7[degrees] 00'.
The aim is to obtain the angular distance of each particle to the direction of the vehicle.
This method draws circles, with the centre of each one being a bright star point and the radius being a special angular distance. For the stars in each star point set, the angular distance of any pair of star points in the star sets is calculated and the star point closest to the centre of the star point set is taken as the starting point.
Both define variation as the difference between true north and magnetic north and declination as the "angular distance of a celestial body north or south of the equator measured along the hour angle of the body."
The calculated electric field around the body (angular distance from the source is given in degrees) is given in Figure 6.
* 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
Spatial resolution, i.e., 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].

Full browser ?