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  2. Jet Propulsion Laboratory Development Ephemeris - Wikipedia

    en.wikipedia.org/wiki/Jet_Propulsion_Laboratory...

    DE402 was released in 1995, and was quickly superseded by DE403. DE403 [ 21 ] was created 1993, released in 1995, expressed in the coordinates of the International Earth Rotation Service (IERS) reference frame, essentially the ICRF.

  3. NUTS statistical regions of Germany - Wikipedia

    en.wikipedia.org/wiki/NUTS_statistical_regions...

    DE402 Frankfurt (Oder), Kreisfreie Stadt: DE403 Potsdam, Kreisfreie Stadt: DE404 Barnim: DE405 Dahme-Spreewald: DE406 Elbe-Elster: DE407 Havelland: DE408 Märkisch-Oderland: DE409 Oberhavel: DE40A Oberspreewald-Lausitz: DE40B Oder-Spree: DE40C Ostprignitz-Ruppin: DE40D Potsdam-Mittelmark: DE40E Prignitz: DE40F Spree-Neiße: DE40G Teltow ...

  4. European Terrestrial Reference System 1989 - Wikipedia

    en.wikipedia.org/wiki/European_Terrestrial...

    Coordinate System Type Geographic Datum European Terrestrial Reference System 1989 (EPSG ID 4258) Spheroid GRS 1980 (EPSG ID 7019) Semi-Major Axis 6378137.000 Semi-Minor Axis 6356752.314140 Inverse flattening 298.257222101 Prime Meridian Greenwich PM Units Decimal Degree, 0.01745329251994328

  5. Earth-centered, Earth-fixed coordinate system - Wikipedia

    en.wikipedia.org/wiki/Earth-centered,_Earth...

    The Earth-centered, Earth-fixed coordinate system (acronym ECEF), also known as the geocentric coordinate system, is a cartesian spatial reference system that represents locations in the vicinity of the Earth (including its surface, interior, atmosphere, and surrounding outer space) as X, Y, and Z measurements from its center of mass.

  6. Hellenic Geodetic Reference System 1987 - Wikipedia

    en.wikipedia.org/wiki/Hellenic_Geodetic...

    The datum of that system was based on the Bessel ellipsoid, with an accurate determination of the geodetic coordinates at the central premises of the National Observatory of Athens 37° 58' 20.1" N - 23° 42' 58.5"E with current Google Earth TM coordinates:37° 58' 20.20" N - 23° 43' 05.36"E and supplemented by an accurately measured azimuth ...

  7. Geodetic coordinates - Wikipedia

    en.wikipedia.org/wiki/Geodetic_coordinates

    Geodetic latitude and geocentric latitude have different definitions. Geodetic latitude is defined as the angle between the equatorial plane and the surface normal at a point on the ellipsoid, whereas geocentric latitude is defined as the angle between the equatorial plane and a radial line connecting the centre of the ellipsoid to a point on the surface (see figure).

  8. Lode coordinates - Wikipedia

    en.wikipedia.org/wiki/Lode_Coordinates

    Lode coordinates (,,) or Haigh–Westergaard coordinates (,,). [ 1 ] are a set of tensor invariants that span the space of real , symmetric , second-order, 3-dimensional tensors and are isomorphic with respect to principal stress space .

  9. Decimal degrees - Wikipedia

    en.wikipedia.org/wiki/Decimal_degrees

    Decimal degrees (DD) is a notation for expressing latitude and longitude geographic coordinates as decimal fractions of a degree.DD are used in many geographic information systems (GIS), web mapping applications such as OpenStreetMap, and GPS devices.