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EPSG Geodetic Parameter Dataset
Version: 8.2.0
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EPSG:3857
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EPSG Geodetic Parameter Registry
Version: 8.2.0
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Reporting: 1 - 1 out of 1 selected entities
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| Name | WGS 84 / Pseudo-Mercator | VALID | ||||
| Identifier |
urn:ogc:def:crs:EPSG::3857
EPSG::3857
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| Aliases | Alias | Naming System | Remarks | |||
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WGS 84 / Popular Visualisation Pseudo-Mercator | EPSG alias |
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| Scope | Certain Web mapping and visualisation applications. | |||||
| Remarks | Uses spherical development of ellipsoidal coordinates. Relative to an ellipsoidal development errors of up to 800 metres in position and 0.7 percent in scale may arise. It is not a recognised geodetic system: see WGS 84 / World Mercator (CRS code 3395). | |||||
| Domain of Validity | World between 85°S and 85°N. | |||||
| Derived From | Base CRS name | WGS 84 | ||||
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Base CRS type | geographic 2D | ||||
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Geodetic Datum | World Geodetic System 1984 *** Alias(es): [WGS 84] *** | ||||
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Prime Meridian | Greenwich |
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degree | |
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Ellipsoid | WGS 84 *** Alias(es): [WGS84] *** | |||
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Remarks | Inverse flattening derived from four defining parameters (semi-major axis; C20 = -484.16685*10e-6; earth's angular velocity w = 7292115e11 rad/sec; gravitational constant GM = 3986005e8 m*m*m/s/s). | ||
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Shape | Ellipsoid | ||
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Semi major axis (a) | 6378137 | metre | |
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Inverse flattening | 298.257223563 | unity | |
| Map Projection | Name | Popular Visualisation Pseudo-Mercator *** Alias(es): [Pseudo-Mercator] *** | ||||
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Operation Method | Popular Visualisation Pseudo Mercator | ||||
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Is the operation reversible? | Yes | |||
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Conversion Parameters | Parameter Name | Parameter Value or Parameter File | Unit of Measure | ||
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Latitude of natural origin |
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degree | ||
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Longitude of natural origin |
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degree | ||
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False easting | 0 | metre | ||
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False northing | 0 | metre | ||
| Coordinate Axes | Order | Name | Abbrev | Unit of Measure | Orientation | |
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1 | Easting | X | metre | east | |
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2 | Northing | Y | metre | north | |