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

object's location expressed in the equatorial coordinate system can be transformed into the galactic coordinate system. In these equations, α is right ascension...

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

position of stars relative to an observer's ideal horizon. The equatorial coordinate system is centered at Earth's center, but fixed relative to the celestial...

Earth's equatorial region tropical climate the Celestial equator equatorial orbit equatorial coordinate system equatorial mount, of telescopes equatorial bond...

right ascension (α) and declination (δ). This pair based the equatorial coordinate system. While δ is given in degrees (from +90° at the north celestial...

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

specify the location of a point on the celestial sphere in the equatorial coordinate system. An old term, right ascension (Latin: ascensio recta) refers...

is a Cartesian coordinate system (x, y, z). The equatorial coordinate system uses the celestial equator. The ecliptic coordinate system uses the ecliptic...

A near-equatorial orbit is an orbit that lies close to the equatorial plane of the primary body orbited. Such an orbit has an inclination near 0°. On Earth...

Equatorial Coordinate System), the direction cosine vector of the orbiting body from the observation points (from Topocentric Equatorial Coordinate System)...

astronomy are celestial coordinate systems and time. The coordinates of objects on the sky are listed using the equatorial coordinate system, which is based on...

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...

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

The perifocal coordinate (PQW) system is a frame of reference for an orbit. The frame is centered at the focus of the orbit, i.e. the celestial body about...

two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle. The declination angle is measured...

Earth. By extension, it is also a plane of reference in the equatorial coordinate system. Due to Earth's axial tilt, the celestial equator is currently...

An areostationary orbit, areosynchronous equatorial orbit (AEO), or Mars geostationary orbit is a circular areo­synchronous orbit (ASO) approximately 17...

is an event, defined only when using either an equatorial or an ecliptic celestial coordinate system, in which any two astronomical objects (e.g. asteroids...

ISBN 0-7506-6169-0. Retrieved 2023-01-08. Xu, Guochang; Xu, Yan (2016). "Coordinate and Time Systems". GPS. pp. 17–36. doi:10.1007/978-3-662-50367-6_2. ISBN 978-3-662-50365-2...

A planetary coordinate system (also referred to as planetographic, planetodetic, or planetocentric) is a generalization of the geographic, geodetic, and...

Orbital mechanics Astronomical coordinate systems Characteristic energy Escape velocity Ephemeris Equatorial coordinate system Ground track Hill sphere Interplanetary...

orbit. However, a synchronous orbit need not be equatorial; nor circular. A body in a non-equatorial synchronous orbit will appear to oscillate north...

altitudes below 300 km (190 mi) decay quickly due to atmospheric drag. Equatorial low Earth orbits (ELEO) are a subset of LEO. These orbits, with low orbital...

specify the location of a point on the celestial sphere in the equatorial coordinate system. The local hour angle (LHA) of an object in the observer's sky...

(astronomy), an astronomical term associated with the celestial equatorial coordinate system Σ(α, δ)ellipse and lower, a hyperbola Polar distance (geometry)...

systems design and implementation with a view to maximising service Hour angle, in astronomy, one of the coordinates of the equatorial coordinate system...

eccentricity vector (a vector pointing towards the periapsis). In the case of equatorial orbits (which have no ascending node), the argument is strictly undefined...

telescope equipped with a properly aligned equatorial mount, the observer may also follow the equatorial coordinate system on a star map to move along the lines...