colatitude

(koh-lat -ă-tewd) The complement of the celestial latitude (β) of a celestial body, i.e. the angle (90° – β). See ecliptic coordinate system.

Collins Dictionary of Astronomy © Market House Books Ltd, 2006

colatitude

[kō′lad·ə‚tüd]

(geodesy)

Ninety degrees minus the latitude.

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References in periodicals archive ?

The magnetic gyrofrequency [[omega].sub.H] is a function of the height h above the ground and the geomagnetic colatitude [lambda] [7]:

Reference [8] describes the transformations between the geographic and geomagnetic coordinate systems, respectively, with colatitudes [theta] and [lambda] = [theta] - ([pi]/180[degrees])[DELTA][theta].

Scientific review on the ionospheric absorption and research prospects of a complex eikonal model for one-layer ionosphere

First of all we partitioned the phantom surfaces at grid points located at the colatitude angles [[theta].sub.1] = 0 < [[theta].sub.2] < *** < [[theta].sub.[upsilon]] < [[theta].sub.[[upsilon]+1]] = [pi] from the north pole to the south pole and azimuthal angles [[empty set].sub.1] = 0 < [[empty set].sub.2] < *** < [[empty set].sub.h] < [[empty set] sub.[h+1]] = 2[pi] around the phantom surface, where [upsilon] stands for vertical and h for horizontal.

In order to make this process more concrete, we have included a sample surface triangulation with [upsilon] = 5 colatitude angles and h = 8 azimuthal angles in Fig.

Estimating volumes of near-spherical molded artifacts

The colatitude of the bottom of the North polar cap, [[theta].sub.c], is the spherical radius of a spherical cap of area [V.sub.R].

The colatitude of top of the South polar cap is then [pi] - [[theta].sub.c].

Now note that we can apply a single [S.sup.d-1] rotation to 5d while keeping the [S.sup.d] colatitude fixed.

Spherical polar coordinates describe a point a on [S.sup.d] by using one longitude, [[alpha].sub.1] [member of ] R, considered modulo 2[pi], and d - 1 colatitudes, [[alpha].sub.k], for k [member of] {2, ...

We use [[delta].sub.F] to produce an increasing list of "fitting" colatitudes of caps, defined by

The area of each corresponding "fitting" collar is given by successive colatitudes in this list.

A partition of the unit sphere into regions of equal area and small diameter

The orientation of the shapes is given by the colatitude [theta] and the azimut [phi].

Computation of Minkowski measures on 2D and 3D binary images

For a purely isotropic distribution of points on a sphere, the colatitudes (corresponding to the angle [theta]) of the points have the density function [PHI]([theta])= 1/2 sin [theta] on [0, [pi]].