Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Download
Faster access than browser!
 

Longitude

Index Longitude

Longitude, is a geographic coordinate that specifies the east-west position of a point on the Earth's surface. [1]

105 relations: African Plate, Airy-0, Almanac, Amerigo Vespucci, Analemma, Angle, Astrolabe, Bowditch's American Practical Navigator, Cardinal direction, Cartesian coordinate system, Cartography, Celestial sphere, Classification of discontinuities, Clockmaker, Coordinated Universal Time, Copenhagen, Degree (angle), East, Ecliptic, Ecliptic coordinate system, El Hierro, Ellipsoid, England, Equation of time, European Terrestrial Reference System 1989, Exploration, Galileo Galilei, Gas giant, Geodesic, Geodesy, Geodetic datum, Geographic coordinate system, Geographical distance, Geographical mile, Geographical pole, Geotagging, Great Britain, Great-circle distance, Greek alphabet, History of longitude, Horizontal position representation, Impact crater, International Meridian Conference, Invariable plane, Io (moon), Jerusalem, John Harrison, Lambda, Latitude, Libration, ..., List of population centers by longitude, Longitude Act, Lunar distance (navigation), Magnetic field, Map projection, Marine chronometer, Mars, Mercury (planet), Meridian arc, Mimas (moon), Minute and second of arc, Natural Area Code, Navigation, New World, North American Datum, North Pole, Northern Hemisphere, Orbital period, Orbital plane (astronomy), Orders of magnitude (length), Paris, Philadelphia, Pi, Pisa, Planet, Plate tectonics, Prime meridian, Quadrant (instrument), Radian, Retrograde and prograde motion, Right ascension, Rome, Rotation around a fixed axis, Royal Observatory, Greenwich, Sailor, Saint Petersburg, Sexagesimal, Singularity (mathematics), South American Plate, South Pole, Spheroid, Sun, The Island of the Day Before, Tidal locking, Time zone, Trigonometric functions, United States Geological Survey, Universal Time, Viking 2, Washington, D.C., West, Western Hemisphere, Wireless telegraphy, World Geodetic System, 180th meridian. Expand index (55 more) »

African Plate

The African Plate is a major tectonic plate straddling the equator as well as the prime meridian.

New!!: Longitude and African Plate · See more »

Airy-0

Airy-0 is a crater on Mars whose location defined the position of the prime meridian of that planet.

New!!: Longitude and Airy-0 · See more »

Almanac

An almanac (also spelled almanack and almanach) is an annual publication listing a set of events forthcoming in the next year.

New!!: Longitude and Almanac · See more »

Amerigo Vespucci

Amerigo Vespucci (March 9, 1454February 22, 1512) was an Italian explorer, financier, navigator and cartographer.

New!!: Longitude and Amerigo Vespucci · See more »

Analemma

In astronomy, an analemma (from Greek ἀνάλημμα analēmma "support") is a diagram showing the variation of the position of the Sun in the sky over the course of a year, as viewed at a fixed time of day and from a fixed location on the Earth.

New!!: Longitude and Analemma · See more »

Angle

In plane geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.

New!!: Longitude and Angle · See more »

Astrolabe

An astrolabe (ἀστρολάβος astrolabos; ٱلأَسْطُرلاب al-Asturlāb; اَختِرِیاب Akhteriab) is an elaborate inclinometer, historically used by astronomers and navigators to measure the inclined position in the sky of a celestial body, day or night.

New!!: Longitude and Astrolabe · See more »

Bowditch's American Practical Navigator

The American Practical Navigator (colloquially often referred to as Bowditch), originally written by Nathaniel Bowditch, is an encyclopedia of navigation.

New!!: Longitude and Bowditch's American Practical Navigator · See more »

Cardinal direction

The four cardinal directions or cardinal points are the directions north, east, south, and west, commonly denoted by their initials N, E, S, and W. East and west are at right angles to north and south, with east being in the clockwise direction of rotation from north and west being directly opposite east.

New!!: Longitude and Cardinal direction · See more »

Cartesian coordinate system

A Cartesian coordinate system is a coordinate system that specifies each point uniquely in a plane by a pair of numerical coordinates, which are the signed distances to the point from two fixed perpendicular directed lines, measured in the same unit of length.

New!!: Longitude and Cartesian coordinate system · See more »

Cartography

Cartography (from Greek χάρτης chartēs, "papyrus, sheet of paper, map"; and γράφειν graphein, "write") is the study and practice of making maps.

New!!: Longitude and Cartography · See more »

Celestial sphere

In astronomy and navigation, the celestial sphere is an abstract sphere with an arbitrarily large radius concentric to Earth.

New!!: Longitude and Celestial sphere · See more »

Classification of discontinuities

Continuous functions are of utmost importance in mathematics, functions and applications.

New!!: Longitude and Classification of discontinuities · See more »

Clockmaker

A clockmaker is an artisan who makes and/or repairs clocks.

New!!: Longitude and Clockmaker · See more »

Coordinated Universal Time

No description.

New!!: Longitude and Coordinated Universal Time · See more »

Copenhagen

Copenhagen (København; Hafnia) is the capital and most populous city of Denmark.

New!!: Longitude and Copenhagen · See more »

Degree (angle)

A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of a plane angle, defined so that a full rotation is 360 degrees.

New!!: Longitude and Degree (angle) · See more »

East

East is one of the four cardinal directions or points of the compass.

New!!: Longitude and East · See more »

Ecliptic

The ecliptic is the circular path on the celestial sphere that the Sun follows over the course of a year; it is the basis of the ecliptic coordinate system.

New!!: Longitude and Ecliptic · See more »

Ecliptic coordinate system

The ecliptic coordinate system is a celestial coordinate system commonly used for representing the apparent positions and orbits of Solar System objects.

New!!: Longitude and Ecliptic coordinate system · See more »

El Hierro

El Hierro, nicknamed Isla del Meridiano (the "Meridian Island"), is the smallest and farthest south and west of the Canary Islands (an Autonomous Community of Spain), in the Atlantic Ocean off the coast of Africa, with a population of 10,162 (2003).

New!!: Longitude and El Hierro · See more »

Ellipsoid

An ellipsoid is a surface that may be obtained from a sphere by deforming it by means of directional scalings, or more generally, of an affine transformation.

New!!: Longitude and Ellipsoid · See more »

England

England is a country that is part of the United Kingdom.

New!!: Longitude and England · See more »

Equation of time

The equation of time describes the discrepancy between two kinds of solar time.

New!!: Longitude and Equation of time · See more »

European Terrestrial Reference System 1989

The European Terrestrial Reference System 1989 (ETRS89) is an ECEF (Earth-Centered, Earth-Fixed) geodetic Cartesian reference frame, in which the Eurasian Plate as a whole is static.

New!!: Longitude and European Terrestrial Reference System 1989 · See more »

Exploration

Exploration is the act of searching for the purpose of discovery of information or resources.

New!!: Longitude and Exploration · See more »

Galileo Galilei

Galileo Galilei (15 February 1564Drake (1978, p. 1). The date of Galileo's birth is given according to the Julian calendar, which was then in force throughout Christendom. In 1582 it was replaced in Italy and several other Catholic countries with the Gregorian calendar. Unless otherwise indicated, dates in this article are given according to the Gregorian calendar. – 8 January 1642) was an Italian polymath.

New!!: Longitude and Galileo Galilei · See more »

Gas giant

A gas giant is a giant planet composed mainly of hydrogen and helium.

New!!: Longitude and Gas giant · See more »

Geodesic

In differential geometry, a geodesic is a generalization of the notion of a "straight line" to "curved spaces".

New!!: Longitude and Geodesic · See more »

Geodesy

Geodesy, also known as geodetics, is the earth science of accurately measuring and understanding three of Earth's fundamental properties: its geometric shape, orientation in space, and gravitational field.

New!!: Longitude and Geodesy · See more »

Geodetic datum

A geodetic datum or geodetic system is a coordinate system, and a set of reference points, used to locate places on the Earth (or similar objects).

New!!: Longitude and Geodetic datum · See more »

Geographic coordinate system

A geographic coordinate system is a coordinate system used in geography that enables every location on Earth to be specified by a set of numbers, letters or symbols.

New!!: Longitude and Geographic coordinate system · See more »

Geographical distance

Geographical distance is the distance measured along the surface of the earth.

New!!: Longitude and Geographical distance · See more »

Geographical mile

The geographical mile is a unit of length determined by 1 minute of arc along the Earth's equator.

New!!: Longitude and Geographical mile · See more »

Geographical pole

A geographical pole is either of the two points on a rotating body (planet, dwarf planet, natural satellite, sphere...etc) where its axis of rotation intersects its surface.

New!!: Longitude and Geographical pole · See more »

Geotagging

Geotagging or GeoTagging, is the process of adding geographical identification metadata to various media such as a geotagged photograph or video, websites, SMS messages, QR Codes or RSS feeds and is a form of geospatial metadata.

New!!: Longitude and Geotagging · See more »

Great Britain

Great Britain, also known as Britain, is a large island in the north Atlantic Ocean off the northwest coast of continental Europe.

New!!: Longitude and Great Britain · See more »

Great-circle distance

The great-circle distance or orthodromic distance is the shortest distance between two points on the surface of a sphere, measured along the surface of the sphere (as opposed to a straight line through the sphere's interior).

New!!: Longitude and Great-circle distance · See more »

Greek alphabet

The Greek alphabet has been used to write the Greek language since the late 9th or early 8th century BC.

New!!: Longitude and Greek alphabet · See more »

History of longitude

The history of longitude is a record of the effort, by astronomers, cartographers and navigators over several centuries, to discover a means of determining longitude.

New!!: Longitude and History of longitude · See more »

Horizontal position representation

A position representation is the parameters used to express a position relative to a reference.

New!!: Longitude and Horizontal position representation · See more »

Impact crater

An impact crater is an approximately circular depression in the surface of a planet, moon, or other solid body in the Solar System or elsewhere, formed by the hypervelocity impact of a smaller body.

New!!: Longitude and Impact crater · See more »

International Meridian Conference

The International Meridian Conference was a conference held in October 1884 in Washington, D.C., in the United States, to determine a prime meridian for international use.

New!!: Longitude and International Meridian Conference · See more »

Invariable plane

The invariable plane of a planetary system, also called Laplace's invariable plane, is the plane passing through its barycenter (center of mass) perpendicular to its angular momentum vector.

New!!: Longitude and Invariable plane · See more »

Io (moon)

Io (Jupiter I) is the innermost of the four Galilean moons of the planet Jupiter.

New!!: Longitude and Io (moon) · See more »

Jerusalem

Jerusalem (יְרוּשָׁלַיִם; القُدس) is a city in the Middle East, located on a plateau in the Judaean Mountains between the Mediterranean and the Dead Sea.

New!!: Longitude and Jerusalem · See more »

John Harrison

John Harrison (– 24 March 1776) was a self-educated English carpenter and clockmaker who invented a marine chronometer, a long-sought-after device for solving the problem of calculating longitude while at sea.

New!!: Longitude and John Harrison · See more »

Lambda

Lambda, Λ, λ (uppercase Λ, lowercase λ; λάμ(β)δα lám(b)da) is the 11th letter of the Greek alphabet.

New!!: Longitude and Lambda · See more »

Latitude

In geography, latitude is a geographic coordinate that specifies the north–south position of a point on the Earth's surface.

New!!: Longitude and Latitude · See more »

Libration

In astronomy, libration is a perceived oscillating motion of orbiting bodies relative to each other, notably including the motion of the Moon relative to Earth, or of trojan asteroids relative to planets.

New!!: Longitude and Libration · See more »

List of population centers by longitude

The following is a list of cities by longitude.

New!!: Longitude and List of population centers by longitude · See more »

Longitude Act

The Longitude Act was an Act of Parliament of the United Kingdom passed in July 1714 at the end of the reign of Queen Anne.

New!!: Longitude and Longitude Act · See more »

Lunar distance (navigation)

In celestial navigation, lunar distance is the angular distance between the Moon and another celestial body.

New!!: Longitude and Lunar distance (navigation) · See more »

Magnetic field

A magnetic field is a vector field that describes the magnetic influence of electrical currents and magnetized materials.

New!!: Longitude and Magnetic field · See more »

Map projection

A map projection is a systematic transformation of the latitudes and longitudes of locations from the surface of a sphere or an ellipsoid into locations on a plane.

New!!: Longitude and Map projection · See more »

Marine chronometer

A marine chronometer is a timepiece that is precise and accurate enough to be used as a portable time standard; it can therefore be used to determine longitude by means of celestial navigation.

New!!: Longitude and Marine chronometer · See more »

Mars

Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.

New!!: Longitude and Mars · See more »

Mercury (planet)

Mercury is the smallest and innermost planet in the Solar System.

New!!: Longitude and Mercury (planet) · See more »

Meridian arc

In geodesy, a meridian arc measurement is the distance between two points with the same longitude, i.e., a segment of a meridian curve or its length.

New!!: Longitude and Meridian arc · See more »

Mimas (moon)

Mimas, also designated Saturn I, is a moon of Saturn which was discovered in 1789 by William Herschel.

New!!: Longitude and Mimas (moon) · See more »

Minute and second of arc

A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.

New!!: Longitude and Minute and second of arc · See more »

Natural Area Code

The Natural Area Code (or Universal Address) is a proprietary geocode system for identifying an area anywhere on the Earth, or a volume of space anywhere around the Earth.

New!!: Longitude and Natural Area Code · See more »

Navigation

Navigation is a field of study that focuses on the process of monitoring and controlling the movement of a craft or vehicle from one place to another.

New!!: Longitude and Navigation · See more »

New World

The New World is one of the names used for the majority of Earth's Western Hemisphere, specifically the Americas (including nearby islands such as those of the Caribbean and Bermuda).

New!!: Longitude and New World · See more »

North American Datum

The North American Datum (NAD) is the datum now used to define the geodetic network in North America.

New!!: Longitude and North American Datum · See more »

North Pole

The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is (subject to the caveats explained below) defined as the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface.

New!!: Longitude and North Pole · See more »

Northern Hemisphere

The Northern Hemisphere is the half of Earth that is north of the Equator.

New!!: Longitude and Northern Hemisphere · See more »

Orbital period

The orbital period is the time a given astronomical object takes to complete one orbit around another object, and applies in astronomy usually to planets or asteroids orbiting the Sun, moons orbiting planets, exoplanets orbiting other stars, or binary stars.

New!!: Longitude and Orbital period · See more »

Orbital plane (astronomy)

The orbital plane of a revolving body is the geometric plane on which its orbit lies.

New!!: Longitude and Orbital plane (astronomy) · See more »

Orders of magnitude (length)

The following are examples of orders of magnitude for different lengths.

New!!: Longitude and Orders of magnitude (length) · See more »

Paris

Paris is the capital and most populous city of France, with an area of and a population of 2,206,488.

New!!: Longitude and Paris · See more »

Philadelphia

Philadelphia is the largest city in the U.S. state and Commonwealth of Pennsylvania, and the sixth-most populous U.S. city, with a 2017 census-estimated population of 1,580,863.

New!!: Longitude and Philadelphia · See more »

Pi

The number is a mathematical constant.

New!!: Longitude and Pi · See more »

Pisa

Pisa is a city in the Tuscany region of Central Italy straddling the Arno just before it empties into the Ligurian Sea.

New!!: Longitude and Pisa · See more »

Planet

A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.

New!!: Longitude and Planet · See more »

Plate tectonics

Plate tectonics (from the Late Latin tectonicus, from the τεκτονικός "pertaining to building") is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of the Earth's lithosphere, since tectonic processes began on Earth between 3 and 3.5 billion years ago.

New!!: Longitude and Plate tectonics · See more »

Prime meridian

A prime meridian is a meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°.

New!!: Longitude and Prime meridian · See more »

Quadrant (instrument)

A quadrant is an instrument that is used to measure angles up to 90°.

New!!: Longitude and Quadrant (instrument) · See more »

Radian

The radian (SI symbol rad) is the SI unit for measuring angles, and is the standard unit of angular measure used in many areas of mathematics.

New!!: Longitude and Radian · See more »

Retrograde and prograde motion

Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is the central object (right figure).

New!!: Longitude and Retrograde and prograde motion · See more »

Right ascension

Right ascension (abbreviated RA; symbol) is the angular distance measured only eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point above the earth in question.

New!!: Longitude and Right ascension · See more »

Rome

Rome (Roma; Roma) is the capital city of Italy and a special comune (named Comune di Roma Capitale).

New!!: Longitude and Rome · See more »

Rotation around a fixed axis

Rotation around a fixed axis or about a fixed axis of revolution or motion with respect to a fixed axis of rotation is a special case of rotational motion.

New!!: Longitude and Rotation around a fixed axis · See more »

Royal Observatory, Greenwich

The Royal Observatory, Greenwich (ROG; known as the Old Royal Observatory from 1957 to 1998, when the working Royal Greenwich Observatory, RGO, moved from Greenwich to Herstmonceux) is an observatory situated on a hill in Greenwich Park, overlooking the River Thames.

New!!: Longitude and Royal Observatory, Greenwich · See more »

Sailor

A sailor, seaman, mariner, or seafarer is a person who navigates waterborne vessels or assists as a crewmember in their operation and maintenance.

New!!: Longitude and Sailor · See more »

Saint Petersburg

Saint Petersburg (p) is Russia's second-largest city after Moscow, with 5 million inhabitants in 2012, part of the Saint Petersburg agglomeration with a population of 6.2 million (2015).

New!!: Longitude and Saint Petersburg · See more »

Sexagesimal

Sexagesimal (base 60) is a numeral system with sixty as its base.

New!!: Longitude and Sexagesimal · See more »

Singularity (mathematics)

In mathematics, a singularity is in general a point at which a given mathematical object is not defined, or a point of an exceptional set where it fails to be well-behaved in some particular way, such as differentiability.

New!!: Longitude and Singularity (mathematics) · See more »

South American Plate

The South American Plate is a tectonic plate which includes the continent of South America and also a sizeable region of the Atlantic Ocean seabed extending eastward to the African Plate creating the Mid-Atlantic Ridge The easterly side is a divergent boundary with the African Plate forming the southern part of the Mid-Atlantic Ridge.

New!!: Longitude and South American Plate · See more »

South Pole

The South Pole, also known as the Geographic South Pole or Terrestrial South Pole, is one of the two points where the Earth's axis of rotation intersects its surface.

New!!: Longitude and South Pole · See more »

Spheroid

A spheroid, or ellipsoid of revolution, is a quadric surface obtained by rotating an ellipse about one of its principal axes; in other words, an ellipsoid with two equal semi-diameters.

New!!: Longitude and Spheroid · See more »

Sun

The Sun is the star at the center of the Solar System.

New!!: Longitude and Sun · See more »

The Island of the Day Before

The Island of the Day Before (L'isola del giorno prima) is a historical fiction novel by Umberto Eco set in the 17th-century during the historical search for the secret of longitude.

New!!: Longitude and The Island of the Day Before · See more »

Tidal locking

Tidal locking (also called gravitational locking or captured rotation) occurs when the long-term interaction between a pair of co-orbiting astronomical bodies drives the rotation rate of at least one of them into the state where there is no more net transfer of angular momentum between this body (e.g. a planet) and its orbit around the second body (e.g. a star); this condition of "no net transfer" must be satisfied over the course of one orbit around the second body.

New!!: Longitude and Tidal locking · See more »

Time zone

A time zone is a region of the globe that observes a uniform standard time for legal, commercial, and social purposes.

New!!: Longitude and Time zone · See more »

Trigonometric functions

In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are functions of an angle.

New!!: Longitude and Trigonometric functions · See more »

United States Geological Survey

The United States Geological Survey (USGS, formerly simply Geological Survey) is a scientific agency of the United States government.

New!!: Longitude and United States Geological Survey · See more »

Universal Time

Universal Time (UT) is a time standard based on Earth's rotation.

New!!: Longitude and Universal Time · See more »

Viking 2

The Viking 2 mission was part of the American Viking program to Mars, and consisted of an orbiter and a lander essentially identical to that of the Viking 1 mission.

New!!: Longitude and Viking 2 · See more »

Washington, D.C.

Washington, D.C., formally the District of Columbia and commonly referred to as Washington or D.C., is the capital of the United States of America.

New!!: Longitude and Washington, D.C. · See more »

West

West is one of the four cardinal directions or points of the compass.

New!!: Longitude and West · See more »

Western Hemisphere

The Western Hemisphere is a geographical term for the half of Earth which lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian.

New!!: Longitude and Western Hemisphere · See more »

Wireless telegraphy

Wireless telegraphy is the transmission of telegraphy signals from one point to another by means of an electromagnetic, electrostatic or magnetic field, or by electrical current through the earth or water.

New!!: Longitude and Wireless telegraphy · See more »

World Geodetic System

The World Geodetic System (WGS) is a standard for use in cartography, geodesy, and satellite navigation including GPS.

New!!: Longitude and World Geodetic System · See more »

180th meridian

The 180th meridian or antimeridian is the meridian 180° east or west of the Prime Meridian, with which it forms a great circle dividing the earth into the Western and Eastern Hemispheres.

New!!: Longitude and 180th meridian · See more »

Redirects here:

East longitude, Length of a degree of longitude, Long., Longatude, Longditude, Longitude (planets), Longitudes, Longtitude, Ls (astronomy), Meridian of longitude, Meridians of longitude, Planetocentric longitude, West longitude, Zero Point of Longitude.

References

[1] https://en.wikipedia.org/wiki/Longitude

OutgoingIncoming
Hey! We are on Facebook now! »