The horizontal coordinate system is a celestial coordinate system that uses the observer's local horizon as the fundamental plane to define two angles...

The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects. It may be implemented in spherical...

+90°), as done in the horizontal coordinate system. (See graphic re "mathematics convention".) The spherical coordinate system of the physics convention...

directions') is the horizontal angle from a cardinal direction, most commonly north, in a local or observer-centric spherical coordinate system. Mathematically...

down (or down to up), such as the y-axis in the Cartesian coordinate system. The word horizontal is derived from the Latin horizon, which derives from the...

In geometry, a Cartesian coordinate system (UK: /kɑːrˈtiːzjən/, US: /kɑːrˈtiːʒən/) in a plane is a coordinate system that specifies each point uniquely...

They are also known as local ellipsoidal system, local geodetic coordinate system, local vertical, local horizontal coordinates (LVLH), or topocentric coordinates...

horizontal datum, map projection (except in the geographic coordinate system), origin point, and unit of measure. Thousands of coordinate systems have...

ground vehicles/cars. It is a type of geographic coordinate system. There are several options for horizontal position representations, each with different...

A cylindrical coordinate system is a three-dimensional coordinate system that specifies point positions around a main axis (a chosen directed line) and...

and contexts Horizontal coordinate system, in astronomy Horizontalism, in monetary circuit theory Horizontalism, in sociology Horizontal market, in microeconomics...

can then be used to derive the position of the object in the horizontal coordinate system, consisting of the altitude and azimuth. The coordinates of celestial...

coordinate system of the Earth, the fundamental plane is the Equator. Astronomical coordinate systems have varying fundamental planes: The horizontal...

In mathematics, the polar coordinate system specifies a given point in a plane by using a distance and an angle as its two coordinates. These are the...

A geographic coordinate system (GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude...

The galactic coordinate system is a celestial coordinate system in spherical coordinates, with the Sun as its center, the primary direction aligned with...

azimuth angle is the azimuth (horizontal angle with respect to north) of the Sun's position. This horizontal coordinate defines the Sun's relative direction...

12 hours from solar noon. In astronomy, the altitude in the horizontal coordinate system and the zenith angle are complementary angles, with the horizon...

elsewhere. Azimuth Solar azimuth angle Horizontal coordinate system List of orbits Photovoltaic mounting system § Orientation and inclination Position...

In astronomy, the ecliptic coordinate system is a celestial coordinate system commonly used for representing the apparent positions, orbits, and pole orientations...

The supergalactic coordinate system is a reference frame for the supercluster of galaxies that contains the Milky Way galaxy, referenced to a local relatively...

eyes of the observer. It is the fundamental plane of the horizontal coordinate system, the locus of points that have an altitude of zero degrees. While...

position in the ecliptic coordinate system, convert to the equatorial coordinate system, and convert to the horizontal coordinate system, for the observer's...

positioning of a celestial object by the horizontal system varies with time, but is a useful coordinate system for locating and tracking objects for observers...

geographic coordinate system on that ellipsoid can be used to measure the latitude and longitude of real-world locations. Regional horizontal datums, such...

A projected coordinate system – also called a projected coordinate reference system, planar coordinate system, or grid reference system – is a type of...

(LCM), or principal vertical. Vertical circles are part of the horizontal coordinate system. Vertical circle (instrument) N., N. "vertical circle, noun"...

poles at the opposite ends. In another approach known as the horizontal coordinate system, the meridian is divided into the local meridian, the semicircle...

A Gaussian grid is used in the earth sciences as a gridded horizontal coordinate system for scientific modeling on a sphere (i.e., the approximate shape...

one of two vertical directions at a specified location, orthogonal to a horizontal flat surface. The direction opposite of the nadir is the zenith. Although...