Geocentric System
Related Category: Astronomy: General
see Ptolemaic system.
More on Geocentric System
Ptolemaic System - historically the most influential of the geocentric cosmological theories, i.e.
Geocentric
From LoveToKnow 1911
GEOCENTRIC, referred to the centre of the earth (Gr. yn) as an origin; a term designating especially the co-ordinates of a heavenly body referred to this origin.
Geocentric model
This artistic representation of the geocentric model shows signs of the zodiac and the solar system with world at centre.
Geocentric Coordinates
This entry contributed by Dana Romero
Geocentric means "Earth-centered," so geocentric coordinates include any coordinate systems (e.g., Cartesian, spherical, or elliptical) which have the Earth's center as their origin.
Geocentric models of the universe were based on the assumption that the Sun, the Moon, and the planets all orbit Earth. The most successful and long-lived of these was the Ptolemaic model.
Geocentric
Refers to a reference system centered at the Earth's center.
Geocentric As viewed or measured from the centre of the Earth.
Gibbous Phase of a planet or the Moon more than fifty percent illuminated. For example, the Moon is gibbous between first and last quarter.
Geocentric. Centered on the Earth.
Geosynchronous. Term applied to any equatorial satellite with an orbital velocity equal to the rotational velocity of the Earth.
Geocentric distance: The distance from Earth.
Geologist: Scientist who studies Earth, its materials, the physical and chemical changes that occur on the surface and in the interior, and the history of the planet and its life forms.
Geocentric Earth-centred.
Geostationary Orbit The orbit of a satellite which is both geosynchronous and in the equatorial plane. The satellite will appear to remain in a fixed position in relation to the observer.
Geocentric Universe
Aristotle believed the universe was divided into two parts, the earth corrupt and the heavens perfect and immutable. The geocentric universe described the universe with the earth at the center.
Giant Molecular Cloud ...
geocentric
The theory which stated that the Earth was the centre of the solar system, believed to be an accurate description of the solar system until the 17th century.
Geocentric
(a) Having the Earth at the centre.
(b) With reference to, or pertaining to, the center of the Earth.
Geocentric Coordinates ...
geocentric universe: A model universe with Earth at the center, such as the Ptolemaic universe.
Geocentric. Meaning: As seen from the centre of Earth. A system of co-ordinates.
Geodesy. The study of the shape, mass, size and other features of the Earth.
Geocentric - Centered on the Earth. In a geocentric model of the solar system, the planets moved about the Earth
Geodesic - The path in spacetime followed by a light beam or a freely moving object ...
Geocentric Model
As discussed in the Ancient Astronomy section, the geocentric model had seemingly logical evidence. First of all, if the Earth were moving, then wouldn't we feel it, or feel a strong wind in the direction of movement?
Geocentric Based on the Earth as center; as, the geocentric theory of the universe.
Geomagnetic storm A magnetic storm on Earth.
Geocentric phenomena of the planets Planetary conjunctions Apparent sizes of the Planets ...
Geocentric model
In astronomy, the geocentric model or The Ptolemaic worldview of the universe is the Superseded scientific theories#Superseded astronomical and cosmological theories that the Earth is the center of the universe and other objects ...
GEOCENTRIC
Geocentric means Earth-centered. In a geocentric model of the universe, everything revolves around the Earth; this, of course, is a false model.
Geocentric
Simply means the Earth in the Center. People used to believe the Universe was geocentric, or that the Earth was in the center of the Universe.
Geophysics ...
Geocentric
An adjective meaning "centered on the Earth." Most early civilizations had a geocentric view of the universe.
Infrared Telescope ...
Geocentric system (Ptolemy) counted the Moon and Sun as planets, along with Mercury, Venus, Mars, Jupiter, and Saturn
7
1550 ...
A geocentric model in which the Earth remained stationary as the other planets the Sun, the Moon and the stars orbited it on their spheres. It was eventually replaced by the Copernican model. [A84]
Pulsar ...
In geocentric models the spheres were most commonly arranged outwards from the center in this order: the sphere of the Moon, the sphere of Mercury, the sphere of Venus, the sphere of the Sun, the sphere of Mars, the sphere of Jupiter, ...
The geocentric system of Tycho Brahe (1546-1601) shows the Moon and the Sun revolving around Earth while Mercury, Venus, Mars, Jupiter, and Saturn revolve around the Sun, all surrounded by a sphere of fixed stars.
The geocentric model was generally accepted at the time not only for scriptural reasons.
In the geocentric model of the solar system, mechanisms such as the deferent and epicycle were supposed to explain the motion of the planets in terms of perfect spheres or rings.
The simple geocentric model cannot explain the retrograde motion of the planets. Around 140 A.D., Ptolemy proposed his refined geocentric model. (He proposed many refinements. We only talk about the simplest one.) ...
Right: the geocentric model for 18-Jul-1985.
Left: Blowup of the inner part to show the Moon and Mercury.
Ptolemy's geocentric universe
Ptolemy (lived 85--165 C.E.) set out to finally solve the problem of the planets motion.
The point in a geocentric orbit that is furthest from the Earth's surface.
Related category
- CELESTIAL MECHANICS ...
geocentric (NASA SP-7, 1965) Relative to the earth as a center; measured from the center of the earth. geocentric diameter (NASA SP-7, 1965) The diameter of a celestial body measured in seconds of arc as viewed from the earth's center.
Ptolemy suggests geocentric theory of the universe in famous work Mathematike Syntaxis.
5th century A.D.
England ...
For bodies of the solar system, parallax is measured from the surface of the earth and its center and is called geocentric parallax, varying with the body's altitude and distance form the earth.
See also: Meteor, Meteorite, Meteoroid, Persistent train Geocentric Earth-centered. Heliocentric Sun-centered. Inclination Abbreviation i., in the Solar System, the angle between an orbit and the plane of the Earth's orbit (ecliptic).
After launch on an M-V-3 launch vehicle Nozomi was put into an elliptical geocentric parking orbit with a perigee of 340 km and an apogee of 400,000 km.
Ptolemy's system, which contained not only original work but also a synthesis of the views of previous Greek philosophers, was basically geocentric and circular in conception.
The geocentric view had been dominant since the time of Aristotle, and the controversy engendered by Galileo's opposition to this view resulted in the Catholic Church's prohibiting the advocacy of heliocentrism as potentially factual, ...
galaxy a gravitationally bound collection of millions or billions of stars, gas, and dust geocentric having the Earth as the centre globular cluster a spherical cluster of older stars found in the halos of galaxies
H ...
The basic longitude from a GPS receiver is referred to WGS 84 (World Geodetic System 84), which is a geocentric frame, with longitudes, latitudes and heights referred to a spheroid that best fits mean sea level over the whole globe.
The Catholic Church, which was very powerful and influential in Galileo's day, strongly supported the theory of a geocentric, or Earth-centered, universe.
-- Diurnal, ∨ Geocentric, parallax, the parallax of a body with reference to the earth's center. This is the kind of parallax that is generally understood when the term is used without qualification.
Geocentric - Earth is in the middle of everything. While this may seem egotistical, there was also the idea that the Earth was not moving, since you don't feel any motion. It was just easiest to put the Earth in the middle.
Even so, a major lunar standstill comes to pass when the Moon reaches its absolute greatest (geocentric) declination north or south in this 18.5 to 19-year cycle.
PTOLEMY (about ad 100-70), astronomer and mathematician, whose synthesis of the geocentric theory that the earth is the center of the universe dominated astronomical thought until the 17th century.
GSM coordinates--geocentric solar magnetospheric coordinates, the system in which locations in the large-scale magnetosphere are usually given.
The four largest moons of Jupiter were the first objects found to be revolving around an object other than the Earth; this was part of a blow, when put together with the findings of Kepler and Issac Newton, from which the geocentric (earth centered) ...
Vela 5A and 5B were placed into nearly circular orbits (roughly 180 degrees apart) at a geocentric distance of ~118,000 km on 23 May 1969; the orbital period was ~112 hours. Each satellite rotated about its spin axis with a ~64-sec period.
P-angle: The position angle between the geocentric north pole and the solar rotational north pole measured eastward from geocentric north. The range in P is plus or minus 26.31°.
Delta. The upper-case Greek letter used to denote an object's geocentric distance in ephemeris tables; see "ephemeris". (Note that lower-case delta is used to denote declination.) ...
A Greek astronomer named Ptolemy wrote the first astronomy book (called "Almagest") and laid down this geocentric (Earth centered) view.
In contrast, scientists before Copernicus ascribed to the Ptolemaic system, also known as the geocentric theory. The Ptolemaic system stated that all the planets, the Moon, and the Sun orbited the Earth, which was the center of the universe.
These and subsequent observations and his interpretations of them eventually led to the demise of the geocentric Ptolemaic model of the universe and the adoption of a heliocentric model as proposed in 1543 by Copernicus.
NASA's Twelve Year Planetary Ephemeris provides detailed and accurate geocentric positions
Planetary Remote Sensing (part of the awesome Remote Sensing Tutorial by Nicholas M. Short Sr.)
Planetary Tour Guide ...
 See also: Earth, Sun, Planet, Solar, Orbit
  
|
RSS
