Definitions for "Longitude"
Related Terms:
Prime meridian, Latitude, Greenwich meridian, Meridians, Meridian, Geographic coordinates, Meridional, Geodetic coordinates, Northing, Easting, Geographic coordinate system, Mercator projection, Utm, Parallels, Prime vertical, True north, Graticule, Parallel of latitude, Grid north, Universal transverse mercator, Azimuth, Absolute location, Principal meridian, Mercator, Hour angle, Celestial coordinates, Compass rose, South pole, Departure, Declination, Angular distance, Central meridian, West, Equator, Rhumb line, Bearing, Magnetic declination, Aspect, Altitude, Cardinal direction, Hour circle, Right ascension, Sextant, Location, Arcsecond, International date line, South celestial pole, Azimuth angle, Pole , Compass card
Length; measure or distance along the longest line; -- distinguished from breadth or thickness; as, the longitude of a room; rare now, except in a humorous sense.
The arc or portion of the equator intersected between the meridian of a given place and the meridian of some other place from which longitude is reckoned, as from Greenwich, England, or sometimes from the capital of a country, as from Washington or Paris. The longitude of a place is expressed either in degrees or in time; as, that of New York is 74° or 4 h. 56 min. west of Greenwich.
The distance in degrees, reckoned from the vernal equinox, on the ecliptic, to a circle at right angles to the ecliptic passing through the heavenly body whose longitude is designated; as, the longitude of Capella is 79°.
A geographical term for the number of degrees East or West of the Prime Meridian at Greenwich, England.
distance east or west on the earth's surface, measured as an arc of the equator (in degrees up to 180 or by the difference in time) between the meridian passing through a particular place and a standard or prime meridian.
the distance east or west of the International Date Line, an arbitrary line which runs through Greenwich, England.
A distance East or West from the Prime Meridian in Greenwich England, measured in degrees. Valid values are between -180 and +180. West longitudes (including most of the United States) are negative (0 to -180 degrees), and east longitudes are positive (0 to 180 degrees).
Measure of distance east and west of the prime meridian. - Goes up to 180 degrees. - Each major meridian is 15 degrees.
Linear or angular distance that is measured west or east of the Prime Meridian in degrees, minutes and seconds.
In a planeto-centric co-ordinate system, the angle around the equator measured between a fiducial meridian circle (for the Earth, conventionally that of Greenwich) and that of a point on the planet's surface. Also used, by analogy, as one co-ordinate in the ecliptic and galactic systems.
Angular arc distance east or west of the Prime Meridian along a parallel of latitude.
A system of referencing relative east-west locations on the earth's surface. It is measured in degrees, minutes, and seconds east or west of the "Prime Meridian" which runs through Greenwich, England.
the imaginary lines that go from north to south (up and down) along the globe, but that measure distances east and west of the Prime Meridian
The distance east or west of the prime meridian of a point on the earth's surface.
Angular distance measured in degrees, minutes, and seconds 180 degrees east and west from the Prime Meridian, the imaginary north-south line through Greenwich, England.
The East-West circle around the Earth, measured in relation to the meridian or latitude (North-South circle). It is measured from Greenwich Meridian.
The angular distance east or west from a meridian drawn between the North and South Poles and passing through Greenwich, England. Longitude is measured in degrees, minutes, and seconds. A combination of latitude and longitude can be used to locate any point on the surface of the Earth.
arc of parallel between the prime meridian and a given point on the globe
Longitude is the name given to imaginary lines running from the North to South pole. They give a measure of the distance east or west of the prime meridian, which runs through Greenwich in London, UK. Longitude is expressed in degrees, ranging from 0° at the Equator to 90° at the Poles. MORE
Imaginary lines (great circles) that pass around the earth intersecting at the north and south geographic poles. Lines of longitude are numbered from 0 degrees - called the greenwich meridian - to 180 degrees. Lines of longitude are designated as E or W depending on whether they are east or west of the Greenwich Meridan. Scott Base is about 168 degrees east.
the location on the Earth measured east or west
How far east or west of the zero meridian a coordinate lies. 0 degrees = the prime meridian; usually Greenwich, England.
Longitude is a west-east measurement of position on the Earth. It is defined by the angle measured from a vertical plane running through the polar axis and the prime meridian. A line connecting all places of the same longitude is termed a meridian. Longitude is measured in degrees, minutes, and seconds. Measurements of longitude range from prime meridian (0°) to 180° West and East from this point.
Angle made by the plane of a meridian passing through a given point on the Earth's surface and the plane of the (prime) meridian passing through Greenwich, England, east or west to 180 degrees ('+' if the point is east, '-' if it is west). One of the two common geographic coordinates of a point on the Earth.
noun - Angular distance on the surface of a planet that measures distance east/west from a prime meridian. Longitudinal lines on a trionian planet run north/south, and are in the shape of half-circles. Each longitude on a tetronian planet is in the shape of a hemisphere.
Imaginary lines on the Earth that join the North and South Pole like segments of an orange.
Measurement: The distance east or west of the prime meridian (measured in degrees), which runs from the north to south pole through Greenwich, England. The distance between lines of longitude are greater at the equator and smaller at the higher latitudes, intersecting at the earth's north and south poles. Time zones are correlated to longitude. See also Greenwich Mean Time
A measurement on a map of location east or west of the prime meridian which is at Greenwich, England. The other coordinate needed to locate any position on the earth's surface (including at sea) is the latitude.
Angular distance east or west on the Earth's surface, measured by the angle contained between the meridian of the point of interest and a prime meridian.
an east-west measurement of position on Earth, measured from a vertical plane running through the polar axis and the prime meridian, recorded in degrees, minutes and seconds ranging from 0 degrees at the prime meridian to 180 degrees west and east. (A line connecting all places of the same longitude is called a meridian.)
Angular distance east or west of the Greenwich meridian. Measured in degrees, minutes, and seconds.
An east/west measurement of position in relation to the Prime Meridian, an imaginary circle that passes through the north and south poles.
An imaginary north - south line running around the globe as a part of the coordinate system for locating points on the earth in measurements of degrees east or west of the zero point at Greenwich, England.
the measurement, in degrees, east and west from the Prime Meridian to the International Date Line.
Used to describe the East-West position of a point. The position is reported as the number of degrees east (to -180.0 degrees) or west (to +180.0 degrees) of the prime meridian (0 degrees). Represented by vertical lines running from the North to South poles. Lines of longitude are farthest apart at the Equator and intersect at both poles, and therefore, are not parallel.
This is the approximate longitude on the planet Mars of the image center. All values are based on the IAU 2000 aerocentric model of Mars with east positive longiude.
earth measurement in degrees of the distance east or west of the Prime Meridian fixed in Greenwich, England.
Angular distance east or west, almost always measured with respect to the prime meridian that runs north and south through Greenwich, England.
are navigational lines on the earth running north to south (pole to pole). They are closest together at the poles, and widest at the equator.
i) The angular distance east or west from a standard meridian such as Greenwich to the meridian of any place, ii) the angular distance of celestial object north or south of the ecliptic measured along a great circle throught the object and the poles of the ecliptic.
the angular measure between the reference meridian and the plane intersecting both poles and a point. The reference meridian, called the prime meridian, is assigned a longitude of 0, and other longitude values are measured from there in appropriate angular units (degrees or radians, for example).
The angle in the equatorial plane between the Greenwich meridian and the equatorial projection of the point of interest. Technically, it's the angle from the Greenwich meridian to the equatorial projection of the geoid normal (a plumb bob), so that "bumps" in the geoid can affect the longitude of points on their sides. However, in the bi-axial ellipsoid approximation the geoid is symmetric about any meridian, so geodetic and geocentric longitudes are equivalent. (Deviations are on the order of a few arc seconds, and are much smaller than other uncertainties in ISO related position data.)
regularly spaced imaginary lines on the earth's surface running from the North Pole to the South Pole; used in coordination with latitude lines to find an object's position on earth.
the number of degrees that a location is east or west of a line passing through the poles and Greenwich in Britain.
the distance of a place east or west of an imaginary line from the top to the bottom of the Earth, measured in degrees.
Imaginary lines that cross the surface of the Earth, running from north to south, measuring how far east or west of the prime meridian a place is located.
A measure of distance east and west of a line drawn between the North and South Poles and passing through the Royal Observatory at Greenwich, England.
an imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator; "all points on the same meridian have the same longitude"
angular distance in degrees east and west of the Prime Meridian on the earth's surface.
The angular distance of the intersection of the zero meridian with the reference circle to the similar intersection of the meridian passing through the object, measured on a reference great circle. (See Observations Using a Gnomon)
An east-west coordinate measured on the surface of a sphere.
A longitude measurement indicates the angular distance (0 to 180 degrees) of a location west or east of the prime meridian. The prime meridian is a measurement line that is drawn from pole to pole around the Earth, passing through Greenwich, England. East denotes positive values; west denotes negative values. For example, Australia has positive longitudes and the US has negative longitudes. Longitude measurement is further specified by measuring the minutes (00 to 59 minutes) and seconds (00 to 59 seconds) of each degree.
The north and south lines running from pole to pole on a map or globe grid.
measures angles in the east-west direction. Defines the x - coordinate of a cartesian coordinate pair.
With Latitude, used to describe a position on the earth's surface. (The vertical) Lines of Longitude run from pole to pole. They are measured in degrees east and west of the prime meridian, which passes through Greenwich. At the equator, 60 miles separates each degree of Longitude, but at the poles they come together, so the actual distance between lines of longitude varies with Latitude. Longitude is always measured along the top and bottom of a chart and this scale should never be used for measuring distances on a chart.
Geographic position of the Remediation Site with respect to the Prime Meridian; expressed in degrees, minutes, and seconds. Used together with a measurement of latitude to identify a specific location on the earth's surface.
(Lo). Angle at the center of the earth between the prime meridian through Greenwich and meridian through a point on the earth's surface, as measured east or west through 180 degrees.
A measurement of position in the east-west direction relative to the prime meridian, which runs through Greenwich, England.
Latitude and longitude create a waypoint. Longitude is the angular distance measured on a great circle of reference from the intersection of the adopted zero meridian with this reference circle to the similar intersection of the meridian passing through the object. (Listen to this mp3 for an entertaining and non-technical way to learn about longitude and latitude (thanks to ACME ))
The measurement of distance east of west of the Prime Meridian.
an angular measurement of east-west location on Earth's surface. Longitude is defined from the prime meridian, which passes through Greenwich, England. The international date line is defined around +/- 180° longitude. (180° east longitude is the same as 180° west longitude, because there are 360° in a circle.) Many astronomers define east longitude as positive. For our solar calculators, we define west longitude to be positive. Click here for an in-depth explanation of latitude and longitude from NASA. Click here for a list of sites to help determine your latitude and longitude.
Distance east or west from a known position (meridian) on the surface of the Earth, measured in degrees at its centre. Today the Prime Meridian (longitude 0°) from which longitude is measured is fixed at Greenwich. (See also latitude)
imaginary vertical lines that circle the earth from north to south and indicate the distance from the prime meridian
North and south circle lines pointing true north, measuring distance east and west 180 degrees from the prime meridian at Greenwich, England. The International Date Line is longitudinal
Angle between the reference meridian (at Greenwich, England) and a point on the surface of the Earth. Usually given as an angle between 0° and 180°, and a letter (E or W) indicating whether it is to the East, or West, of the Greenwich Meridian.
Longitude is the angular distance east or west from the north-south line that passes through Greenwich, England, to a particular location. Greenwich, England has a longitude of zero degrees. The farther east or west of Greenwich you are, the greater your longitude. The Midway Islands (in the Pacific Ocean) have a longitude of 180 degrees (they are on the opposite side of the globe from Greenwich).
Angular distance, in degrees, minutes, and seconds, of a point east or west of the Greenwich meridian.
Angular distance measured in degrees east or west of the prime meridian of Greenwich, UK.
The angle of a location on the earth's surface usually expressed in degrees east or west of the Greenwich Meridian. New York, for example, is at approximately 74° west.
The angular distance of an object east or west of the Prime Meridian—the line of zero longitude that runs through Greenwich, England—expressed in degrees. The longitude of Chicago, for example, is 88° West.
Angular distance east or west of the Greenwich Meridian, measured from 0 t 180 degrees east or west.
A measurement of degrees, minutes and seconds from the Prime Meridian, up to 180° East or West at the International Date Line.
The distance on Earth's surface measured in degrees east and west from the prime meridian.
The Longitude of a Planet is his distance from the beginning of Aries, numbered according to the succession of signs, unto the place of the Planet.
the distance of a position east or west of the prime meridian, measured in degrees and minutes
The location east or west in reference to the Prime Meridian, which is designated as zero (0) degrees longitude. The distance between lines of longitude are greater at the equator and smaller at the higher latitudes, intersecting at the earth's North and South Poles. Time zones are correlated to longitude. See Greenwich Mean Time.
Imaginary lines that run from the North Pole to the South Pole. The lines of longitude start at the Prime Meridian, in Greenwich, England. Longitude measures how far west or east an object is from the Prime Meridian.
A position's distance east or west of the prime meridian (usually measured in degrees) which runs from the North to South Pole through Greenwich, England.
Great circles that pass through both the north and south poles, also called meridians.
The angle between the plane of a meridian and the plane of an initial meridian arbitrarily chosen (the Greenwich Prime Meridian). In Canada, this angle is commonly measured as the angle west of the Prime Meridian.
Unit of measure in terms of north-south meridians. Measured in terms of degrees (º), minutes ( ' ), and seconds ( " ).
The east-west coordinates of Earth. The lines of longitude circle the earth, intersecting at the north and south poles. The prime meridian (0/360 degrees) is located in Greenwich, England. Degrees increase as one moves west of the prime meridian.
The angular measurement of a point on the earth's surface, east or west of the prime meridian. The prime meridian runs through Greenwich, England and is 0 degrees longitude. Since measurements are made East and West, the maximum longitude value is 180 degrees. Mathematically, longitudes are usually denoted as positive for easterly longitudes (e.g., +71 degrees = 71 E), and negative for westerly longitudes (e.g., -65 degrees = 65 W).
The angular distance measured East or West from the prime meridian at Greenwich, England, to the meridian passing through a position, expressed in degrees, minutes, and seconds. Measured by means of meridians that are imaginary lines drawn around the earth through the poles.
angular distance between the plane of a meridian east or west from the plane of the meridian of Greenwich.
The angular distance of a position on the equator east or west of the standard Greenwich meridian up to 180o east or west.
The distance, expressed in degrees, from the International Date Line (-180 degrees) to just west of the International Date Line (179.9999 degrees). Longitudes run perpendicular to the equator. The Western Hemisphere has negative longitudes and the Eastern Hemisphere has positive longitudes.
Distance measured east or west on the earth's surface, measured by the angle which the meridian through a place makes with some standard meridian, as that of Greenwich, Great Britain or Paris, France. Longitude may be measured in time (longitude in time) or in degrees (longitude in arc). ( See latitude , meridian)
the angular distance of a particular place on Earth as measured east or west from the prime meridian running through Greenwich, England
The distance east or west of the prime meridian (measured in degrees). The prime meridian runs from the north to south pole through Greenwich, England.
Imaginary lines drawn through the north and south poles on the globe used to measure distance in degrees east or west of the meridian at Greenwich, England. Greenwich is designated as 0 degrees.
Angular distance on the surface of the Earth measured east or west from the prime meridian at Greenwich, England.
the vertical lines on a map that mark the distance east and west of the Prime Meridian.
The distance east or west from Greenwich, England. Both longitude and latitude are angles measured in degrees.
the arc or portion of the earth's equator intersected between the meridian of a given place and the prime meridian and expressed either in degrees or in time.
Distance east or west of the prime meridian, expressed in degrees or time.
East/west position of a point on the Earth defined as the angle between the plane of a reference meridian and the plane of a meridian passing through an arbitrary point.
An east-west coordinate on the Eartb's surface; the angular distance, measured east or west along the equator, from the Greenwich meridian to the meridian passing through a place.
Geographic distance east or west of the prime meridian expressed in degrees and minutes.
Imaginary lines that wrap around the Earth intersecting at the north and south geographic poles. Lines of longitude are numbered from 0° (the Greenwich Meridian, passing through Greenwich in London, England) to 180°. Longitudes are called east if they fall east of the Greenwich Meridian, and west if they fall west of the Greenwich Meridian. Lines of longitude are all of the same length.
a global standard coordinate used to identify a position on earth given in degrees, minutes and seconds, indicates the east/west position around the globe from a reference point which overlays Greenwich, England, negative values are east of Greenwich and positive values are west.
The angular distance east or west of the Prime Meridian of a celestial object.
Longitude lines run north/south, from the North Pole to the South Pole, and divide the globe into sections shaped like orange wedges. Because the Earth is a sphere, it can be divided into 360 degrees, just like a circle. Therefore, there are 360 degrees of longitude that divide the globe. Mapmakers long ago decided to place 0 degrees longitude through Greenwich, England. A negative sign typically precedes longitude values in the western hemisphere.
The angular distance in degrees east or west of the Greenwich Prime Meridian. Lines of longitude are also referred to as "meridians".
A geographical measurement made up of degrees, minutes, and seconds. It is measured east or west of the Prime Meridian.
The angular distance of a point on the earth's surface east or west of an arbitrarily defined meridian, usually the Greenwich meridian (Greenwich, England). The Greenwich meridian was agreed in 1884 as being the central meridian from which all other meridians would be referenced to in order to calculate longitude.
The position to the east or west of an imaginary circle around the earth that passes through the North Pole, the South Pole, and Greenwich, England.
angle parallel to the equator to indicate position on the earth. The celestial longitude, however, is an angular distance parallel to the ecliptic.
The distance in degrees east or west of the prime meridian, located zero degrees.
Angular distance in a great circle of reference reckoned from an accepted origin to the projection of any point on that circle. Longitude on the Earth's surface is measured on the Equator east and west of the meridian of Greenwich and may be expressed either in degrees or in hours, the hour being taken as the equivalent of 15° of longitude. Celestial longitude is measured in the ecliptic eastward from the vernal equinox. The mean longitude of a celestial body moving in an orbit is the longitude that would be attained by a point moving uniformly in the circle of reference at the same average angular velocity as that of the body, with the initial position of the point so taken that its longitude would be the same as that of the body at a certain specified position in its orbit. With a common initial point, the mean longitude of a body will be the same in whatever circle it may be reckoned.
meridians North & South, expressed as degrees
Longitude is the distance of a location east or west from the prime meridian.
Angular distance in degrees of a point on the earth east or west of the Prime Meridian.
The angular distance east or west from a meridian drawn between the North Pole to the South Pole and passing through Greenwich, England, measured in degrees, minutes, and seconds. A combination of latitude and longitude can be used to locate any spot on the Earthís surface. | | | | | | | | | | N | O | | | | | | | X | Y | Z
The distance between two meridians.
angular distance of a celestial body from the point of intersection of the Ecliptic with the celestial Equator, measured along the Equator (or along the Ecliptic).
The angular distance east (+) or west (-) of the Greenwich meridian, measured along the equator to the 180th meridian.
Distance on the Earth (measured in degrees) east or west from a reference line, usually the line running between the poles passing through Greenwich, England.
The angular distance of a location on the earths surface (or on a chart or map), measured in degrees, minutes and seconds, east or west of the prime (i.e., zero) meridian at Greenwich, England.
The East-West angular distance of a locality from the Prime Meridian. The Prime Meridian is the location of the Greenwich Observatory in England and all points North and South of it.
(Meridians of). Angular distance east or west on the earth's surface, measured from the prime meridian that is 0° and runs through Greenwich, England. The International Date Line is 180°.
The location of a point east or west of the prime meridian. Longitude is shown on a map or globe as north-south lines left and right of the prime meridian, which passes through Greenwich, England.
used to specify position on the Earth, it is the number of degrees east or west of the 0° line going through Greenwich, England.
Lines of Longitude commence at the North Pole and run to the South pole. They are all of equal length and are furthest apart at the Equator. They are used on maps and charts to determine distance in degrees east or west of the Greenwich Meridian which is at 0º.
The angular distance measured in degrees east or west of the prime meridian The prime meridian runs from the north to south pole through Greenwich, England.
One of the two coordinates (the other being latitude) used to locate a position at sea; marked in degrees east or west of the prime meridien (0 degrees longitude) universally accepted to be at Greenwich, England. As there are 360 degrees in a circle, longitude may range up to 180 degrees East or West. 180 degrees East and West, in fact, meet on the other side of the globe from Greenwich, at the International Date Line. Longitude is comparable to the y-axis on a graph.
The second component of a spherical coordinate system used to record east-west positions on the earth's surface, measured in degrees as the arc or position of the earth's equator intersected between the meridian of a given place and the prime meridian, which runs through Greenwich, England. (see Latitude)
Measurement of position on the globe on an East-West axis with Greenwich as the zero point. More information: Longitude
An angular measurement, in degrees, east or west of the prime meridian.
the angular distance on Earth's surface east or west of the prime meridian, expressed in degrees, minutes, and seconds.
The angle formed between a position on or above the earth, the earth’s geometric center, and the meridian passing through the center of the observing instrument in Greenwich, England, as projected down onto the plane of the earth’s equator or viewed from above the pole. Longitudes range from –180 (180 degrees West) to +180 (180 degrees East).
See latitude-longitude.
A measurement of distance given in degrees east (to 180 degrees East) or west (to 180 degrees West) from the Greenwich Meridian (0 degrees).
Measurement along the ecliptic in terms of signs and degrees from the point of the vernal equinox (0° Aries). The longitude of a planet in the 126th degree of the zodiac is 6° Leo. See Right Ascension.
Distance in degrees, minutes and seconds of any place east or west of Greenwich, England. Also measured in hours, minutes and seconds.
Imaginary lines drawn through the North and South Poles on the globe, used to measure distance east and west. Greenwich, England, is designated as 0°, with other distances being measured in degrees east and west of Greenwich.
Longitude, sometimes denoted by the Greek letter λ (lambda),http://www.colorado.edu/geography/gcraft/notes/datum/gif/llhxyz.gif Coordinate Conversion"λ = Longitude east of Greenwich (for longitude west of Greenwich, use a minus sign)."John P. Snyder, http://pubs.er.usgs.gov/usgspubs/pp/pp1395 Map Projections, A Working Manual, USGS Professional Paper 1395, page ix describes the location of a place on Earth east or west of a north-south line called the Prime Meridian. Longitude is given as an angular measurement ranging from 0° at the Prime Meridian to +180° eastward and −180° westward.